I’m running into a recurring and very frustrating issue with the 777-200ER in MSFS 2024.

On my latest flight into KMSP (about 3.5 hours long), I had to go around. While zoomed in on the FMC, I pressed a button and the entire simulator instantly froze. The screen locked solid — no movement or input possible — but audio kept playing in the background. The only option was to kill the sim, which after that much flying feels like a complete waste of time.

This isn’t the first time it has happened. Although the most recent case was at KMSP, I’ve had similar freezes on other flights too, usually during approach or other high workload moments when interacting with the FMC.

For reference, I’m running an Nvidia RTX 4080 with an AMD AM5 Ryzen 9 7900X3D, latest Windows and GPU drivers, MSFS up to date, and the aircraft fully patched via Ops Center. No third-party scenery at KMSP and otherwise smooth performance throughout. I was also running BeyondATC, GSX, SimToolKit, and linking to a Virtual Airline recorder via FSUIPC7 — all of which normally work fine for me without issues.

Has anyone else experienced this? Could it be tied to certain FMC inputs during approach/go-around? It’s incredibly frustrating and I’d really appreciate advice on whether this is a known bug or something I should log via a support ticket.

 I haven’t had the exact same freeze, but I’ve noticed MSFS can be really sensitive when interacting with the FMC, especially during high workload phases like approach or go-around

I've been testing a scenario for several days: TDFI MD-11F or PMDG 738 - Inibuilds KDTW-Inibuilds KBUF - Depart RWY 21R or 22L, ZETTR4 TANKO DERLO WOZEE into a left downind for KBUF RWY23. Every single flight freezes on descent between 10,500' and 8,600' ALT - sound still plays but the sim is completely frozen. During most of those flights I was not interacting in any way with the sim, just observing the descent until freeze. It is repeatable, and so far I've not completed a single flight on this plan out of 6 flights. As a test I flew KCLE-KBUF and had no problem...same aircraft.

These are the only time MSFS2024 has let me down - never had a crash or freeze before this route.

I assume it's something about Inibuilds KBUF the sim doesn't like, but Inibuilds shows it as compatible.

I've tried the same DTW-BUF flight without GSX and still got the freeze.