Jason Williams addresses some longstanding IL-2 issues

In recent weeks and months there have been many comments around some key features in the IL-2 Sturmovik: Great Battles Series. Some of those comments have bubbled over into some heated arguments and an update on what the team was doing about them seemed to be a necessity. That is just what we’ve got with an update from Jason Williams, IL-2’s Executive Producer. Here’s a summary of what he said, what we can expect to see, and some of my own thoughts on it.

Addressing some key items

The issue of the .50cal damage effects has been a longstanding one and it’s getting some attention.

There are four key issues that Jason has laid out in his Briefing Room and Officers Club forum thread. Here they are as he’s laid them out:

  1. Effectiveness and ballistics of US .50 cal. bullets of WWII planes.
  2. Control surfaces “jamming” due to cables and rods being damaged of WWI planes.
  3. Frequency of catastrophic wing failure of WWI planes due to damage.
  4. General ammo and damage modeling concerns.

The issue of the .50cal is an old one that stretches back across multiple sims and there are lots of opinions on how good (or bad) of a weapon it should be. That said, what Jason had to say was very interesting because it’s clear that there were discrepancies in the weapon right from the time it was implemented in 2015 during Battle of Moscow’s development.

Thanks to a well-researched report by community member Yak_Panther and other modders, we have found that certain parameters for our .50s somewhat out of spec. Hmmm…. we’re not exactly sure how this happened. We first built our .50s in 2015, but strange things can happen and our memories fail us on this as we often don’t remember all details of work done years ago. Regardless, Han and Viks have researched the issue anew outside of normal work hours and discovered we have a mismatch with the data that has been posted. So, Han has made adjustments to both the parameters of the bullet and dispersion of the bullets. Will the community like the result? These changes may make them more potent or possibly it won’t be noticeable. At least they are now set to proper parameters and entering testing.

Jason Williams

The thread that Jason references by Yak_Panther is right here for your reading pleasure. In it, Yak_Panther does some impressive level of research into the issue referencing real world ballistics tables and comparing them to testable in-game values.

The results of his work in summary are that the IL-2 version .50cal apparently underestimates penetration capabilities up to 1000 yards and then overestimates them. The bullets are slightly off in their velocity traveling too slow and both drag and mass values are also seemingly off. The exact numbers, tables, and academic references on the subject are all in the thread.

The P-40E-1 was the first aircraft to get .50cal machine guns in the IL-2 series. Some discrepancies with the weapons have their origin there.

Next up, damage models for Flying Circus aircraft including the issue of jammed control surfaces and wing damage failures.

A couple things have happened here that warrant more explanation. We agree that the “jamming” is happening too much and the proper behavior of a control surface becoming loose instead of jammed when cables are severed is also wrong. This was baffling to us, because there is no such problem with WWII birds and these complaints did not seem to appear early in FC’s life cycle.

Jason Williams

Indeed, the issue seemed to crop up not at release of Flying Circus but during the damage model updates in 2020 and that’s where the story does seem to get interesting. Fortunately, the cause of the issue has been identified.

The problem is, we failed to update the WWI aircraft to include this new feature or adhere to the new limits of jamming frequency. Oops… to put it mildly. But why was it not so obvious when FC1 was first released? Another mystery lost to time, complexity of the product and a fast pace of development.

Jason Williams

So, a mistake but also a curious rise in the incidents that seemed to not happen until more recently. I too had noticed it and thought it to be a new and perhaps undocumented feature but this seems to not be working exactly as had been intended and that multiple code updates over time exacerbated the problem. We might never know.

Occasionally wings come off Flying Circus aircraft at damage levels that don’t quite seem to match, it’s being investigated.

Wing failures are yet another issue that plague Flying Circus pilots in some circumstances. There are times where only one or two bullets seem to be behind a total failure of the wing surfaces while other circumstances could see dozens upon dozens of bullets fired without the same kind of result.

Again, here are some key words from Jason on the subject.

This is another issue that is hard to know the totally correct answer to. Our math and the various designs of some WWI planes, says it should happen, but maybe we have something wrong and it happens too often? Play tests also seem to suggest it happens in MP more often than MP. We suspect it is more of a general issue that cannot be resolved with a quick fix, we also don’t know if this behavior is indeed truly wrong. Data on WWI planes is hard to find in general. It requires more research and time to look at. Its definitely in our list of things to work on.

Jason Williams

I think Jason meant to say that it happens more in multiplayer than single player above and on that point it would agree with my own experiences and observations.

Either way, it’s good to know that the team is aware and on their list of things to fix and solve.

Finally, the issues with some larger types of weapons including the 30mm MK108 and the 37mm M4 are apparently also on the docket to be looked at in the future. I haven’t noticed as many issues with these but some have and they are up for a look at by the team in the future.

An open beta?

Another interesting element that Jason mentioned is the possibility of an open beta system. The tester group is small and it can be difficult for the testers to find time to get to every issue. Especially when the issues are damage model related and may require hundreds of flights or even thousands to reveal a potential problem.

It’s unclear how that will play out and just how the test will work. DCS World’s biggest problem with the open beta is that it just became the default release and public releases are so rarely supported especially in multiplayer. I hope not to see a repeat for IL-2, though a more public test would be helpful no doubt in some circumstances so perhaps a limited time test would be the way to approach it.

My thoughts

I’ve been in the midst of writing an editorial covering some of these issues, one that was prompted by several private discussions I’d had as well as a thorough reading of the public posts on the subject matter. I wasn’t able to finish it before this came out and, truth be told, I had stopped and started it several times trying to find the right words to convey the message.

My default position is nearly always that whatever the current state of the sim on the whole it is good and enjoyable but that it can also always be better. And let’s be honest, we are living in a golden era of flight simming right now. The problems we have with them are real, they matter, but they shouldn’t keep us from having an enjoyable time with some of the best and most realistic simulations we’ve even seen in this genre.

The work that community members such as Yak_Panther have done is outstanding. A clear and detailed examination of datapoints is essential. It cuts through a lot of thoughts on it and lays things out through data.

Some will say, “it’s obviously wrong, fix it!” I don’t think that’s a useful position to take because we cannot assume that it’s wrong just because we feel it is. Although that can be the starting point it doesn’t get us further than that and its also not incitement enough to have a whole development team look into something – not when they are busy with other things. To move the needle, data is needed, and some community members have gone above and beyond to find it. I applaud those efforts!

A problem has been found with IL-2’s .50cal bullets, waiting for the fix may take some time

When we in the community do find something wrong, as Yak_Panther has done, there’s also some understanding required by us that finding an issue doesn’t translate into an instant fix of the issue.

A complex simulation like IL-2 needs to be looked into to find the source and come up with the right solution. We may know the problem but the underlying coding responsible is complicated and woven over dozens of years. Bottom line? Fixes will sometimes take time and Jason has given us an indication that while some may only take a few weeks to solve, others will require months.

A key line in Jason’s update that I want to quote is important because it underscores some fundamental realities of software and sim/game development.

Due to the requirements of our development schedule (which is often written months or years in advance) it is difficult for us to “go backward” and address certain issues without severally hurting the current product dev cycle. We have business obligations that we have to meet that require us to balance building new features, content and technology with changing old ones.

Jason Williams

Always worth bearing in mind.

Moving on from here

I think this update by Jason was a good and needed one. It replaces some (sometimes inaccurate) speculation with realities, details and Jason’s patented “real talk.” There are a few mea culpa’s but also I hope a renewed understanding by all that these issues aren’t simple fixes or ones that the development team can immediately pivot to.

Having myself worked in the project manager role, I can understand that you sometimes have to stick to your development plan and schedules. Compartmentalizing the needs of the overall project over solving a specific fix is a necessity at times and while I think we’d all like to snap our fingers and have the thing that bugs us the most about one of our favourite simulators fixed, it all does need time to come into play.

Nothing should downplay legitimate concerns and complaints but we also need to be patient to see them fixed. That patience has been rewarded over the years with a great WWII combat sim. It continues to grow, it continues to solve and fix problems, and there’s reason why it’s one of my most flown simulators. It isn’t perfect and I’m glad to see these issues addressed.


14 Comments Add yours

  1. Sigurd. says:

    Cool snippets. As for me, what I feel is sorely missing is;
    1. Proper squadron formations in flight for more than 4 AC.(Il2 CoD does this just fine)
    2. Heavy bombers in large formations.
    3. Templates of smaller housings and farms outisde major urban areas.

    These are items that were in sims 20 years ago, and are defining items of Western Front air combat. Lets hope it creeps in someday..


  2. Blue 5 says:

    Thank you for a great write-up and commentary. Personally I never felt the .50s were under-powered vs. what I had read or seen in gun-camera footage. Maybe not perfect – as Jason admitted – but they were the size and power to riddle a target and cut it up rather than break it abruptly as the larger weapons should.

    I wonder if people expect too much drama in their weapon / damage model: the best DM was that 3.xx which reduced tendency to catastrophic failure. This was altered towards greater catastrophic effects which IMHO was a step backwards. Tweaking any aspect of the game based on solid data is always good, but I wonder if many players realize just how strong – and damage-resistant – is a wing-spar which can probably cope with 10g? It really should be a very low cause of loss.

    For FC, those aircrafts’ wings tended to ‘fold’ rather than broke off – at least initially. I wonder if the DM could allow for that.

    Still, a great sim all round.

    Liked by 2 people

    1. ShamrockOneFive says:

      Yeah, I didn’t have the kind of issues that other folks were having. Maybe a few times where I kind of questioned if maybe I wasn’t hitting right or if the weapon really was malfunctioning but most of the time I’ve been relatively happy.

      I do go back to my default though that it is useful for a simulator dev team to go back over things and tweak them further and here there’s obviously some discrepancies and room to adjust a few values at the very least.

      I’d still like to see incendiary rounds added to the mix at some point. Jason has said they will look into it but it’s not a simple matter.


      1. Joshua Cook says:

        I second the desire to add incendiary rounds to US .50 caliber guns. From what I’ve read I’ve drawn the conclusion that the use of incendiary ammo may very well be what kept the weapon relevant when almost all other nations were finding the 20 mm cannon with explosive shells to be the sweet spot.

        Liked by 1 person

      2. ShamrockOneFive says:

        I think you’ll find broad agreement that the incendiary ammo type is needed.

        Hopefully 1CGS can carve out some time to do all that needs to be done.


  3. JG4_Moltke1871 says:

    It’s good to see the developers not ignore the issues. It’s a complex building and I only can assume how difficult it is make everything right under pressure of contracts.
    One more topic in the list should be the bomb effectiveness. It was lowered down in a patch in the past.

    Liked by 1 person

    1. ShamrockOneFive says:

      Agreed! It’s definitely a good thing and, as always, we continue forward towards a better simulation.

      I do remember bomb effectiveness being lowered. I think in some respects this brought the bombs closer in line with some historical documentation but there may be some room still for tweaks there too.


  4. Urgent Siesta says:

    “Golden Age of [COMBAT] Flight Simulation”
    Couldn’t agree more – that we are arguing over issues like this is, frankly, A Very Good Thing! It simply means that the simulations are now so accurate that it seems automatically reasonable to compare them to reality.

    Over in the civ sims, I see guys genuinely ticked-off that the cockpit clock has a sweep movement rather than a tick movement. YAWN…
    Here we are debating about inter-body ballistics, collision, penetration, dispersion, structural integrity, explosion/shockwave, etc., etc.

    These are WONDERFUL “problems” to have!

    Liked by 1 person

  5. Det says:

    I know its early, early days and all with regards to Normandy, but I do hope they consider going back to the East eventually. Czech-Hungarian operations, pre/post Seelow, maybe even the Courland Pocket.

    Liked by 1 person

    1. ShamrockOneFive says:

      I’m hoping for that as well! I think it’d put a nice bowtie on the series representing battles from beginning to end across multiple fronts.

      Eventually they will go to a next generation and I suspect that this will happen before that.

      Liked by 1 person

      1. Det says:

        You really think moving over to a new engine will be that soon?


      2. ShamrockOneFive says:

        I don’t think soon but I would make a guess at sometime in the next 5 years. Before that, however, I’m sure we’ll see some continued updates to the current engine.

        The transition may end up being gradual too. Not exactly sure how it will play out.


      3. Blue 5 says:

        If we are getting to E. front ‘wish list’ I would add Smolensk and Kiev (good for early and late) with Seelow Heights as the last map.

        Liked by 1 person

  6. US28_Baer says:

    Wing damage is FC is a problem for some planes and def not others. We all know this and it’s a little disturbing that Jason didn’t couch it in those terms, but let’s see.
    It’s a direct result of the changes to Wing Spar size in 4.006. The Fokker D7, Dr1, and Bristol all got sizeable incraeses in Spar size. The Pfalz DIIIa got a medium upgrade and all the others got bugger all. Result? Those 4 planes have wings that are extremely resistant to damage and all the others have varying degrees of papier mache wings.

    Liked by 1 person

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