X-Plane 12.4 “C-Check Update” is out

February 18, 2026

1–2 minutes

The full release of the X-Plane 12.4 update is now out. The update started into public beta testing back at the end of December and is now ready for the stable release ring. Let’s have a look!

New features added, fixes implemented

X-Plane 12.4 is a modestly sized update packing a bunch of core technology updates, new scenery, aircraft updates and more.

Some of the highlights include multi-threaded scenery processing which should improve performance on some PCs. Your hardware setup will make a big difference in if you’ll get any improvement from this but for people with faster GPU and CPUs installed, this should boost performance significantly.

The sim now has native Tobii eyetracker support so the old plugin is no longer needed.

There’s a custom LEBB – Bilbao Airport scenery included as well. This iconic airport located in the north of Spain has some interesting mountainous scenery nearby and supports helicopters, GA, and airliners.

The update also packs in a bunch of smaller updates across multiple aircraft, graphics, ATC, SDK updates, crashes fixed and more.

Check out the notes here!

6 responses to “X-Plane 12.4 “C-Check Update” is out”

Jer Stryker

February 18, 2026 at 11:01 pm

Looking forward to trying this out. Both the poor performance/eye candy ratio on high end hardware and janky Tobii support have been some of the bigger thorns for me lately.

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1. ShamrockOneFive
  
  February 18, 2026 at 11:02 pm
  
  Have you tried a recent version of OpenTrack with Tobii? I’ve switched to mostly using that for all of my headtracking needs and it works great with Tobii.
  
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  1. Jer Stryker
    
    February 19, 2026 at 8:45 am
    
    I don’t think I’ve tried OpenTrack since waay back when I was gluing LEDs to hats and prying apart webcams to take the IR filter out (this was like 15 years ago when TrackIR was out of my budget). That might not have even been OpenTrack that I was using back then. I also might have used it back when you needed to do a bunch of things to get TrackIR to work in XP11.
    
    Tobii works so well natively in all the other games I use it in (MSFS, Euro Truck Simulator, Star Citizen) that I haven’t seen the need to try anything else. Sounds like in your experience OpenTrack actually improves the native tracking these days, so maybe I’ll give it a try.
    
    The one thing about Tobii that makes it feel inferior to TrackIR to me is it seems there’s this delay between the time I start moving my head and when the game registers the movement. Once my head is moving though, it seems responsive; it’s just that initial move from center. I can’t get rid of it without removing pretty much all the smoothing/center stability settings, which makes the whole thing too sensitive. For whatever reason I don’t seem to have the same problem with TrackIR (I use each on different PCs). Maybe OpenTrack can help with this.
    
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2. Urgent Siesta
  
  February 19, 2026 at 1:03 pm
  
  I’ve been running the 12.4 Beta all along.
  
  if your performance issues are related to CPU limitations, this will give a major improvement. 🤙
  
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Urgent Siesta

February 19, 2026 at 1:06 pm

12.4 has given me the ability to run with all the World Objects, etc, sliders fully to the right for the first time ever. Even with Orbx TrueEarth over downtown London!

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1. ShamrockOneFive
  
  February 20, 2026 at 8:46 pm
  
  That’s fantastic news! I seem to be having a crashing problem (which is strange because the beta up to now was working fine) but once I get it sorted I’ll have to see how performance has improved. Good signs ahead of a next gen terrain engine coming sometime down the road.
  
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