On 7/16/2025 at 12:39 AM, Fielder said:

The most important part of the OP's original post at top of thread is his last sentence:

It is hard to understand why all the 1.5.xx Betas up to 1.5.14 could tolerate the increased memory speed but 1.5.15 and .16 utterly died on the same memory.

He had no problem in the Betas up to 1.5.14. It was the same with me. I do not believe his issue was hardware or settings. The problem was caused by the update to the Beta.

With both 1.5.15 and 1.5.16 updates, I cured the same problem the OP had by a simple 2 step process:

1) leave the beta, restart Windows, open msfs, close msfs.

2) rejoin the beta, restart Windows, open msfs, close msfs.

Before doing those 2 things: constant freezes of the sim, terrible fps and CTD's when using planes that are resource hogs in heavy scenery areas. After doing those 2 things: no CTDs, no freezes, always much better fps.

All I know about the issue, is that this worked for me perfectly. Twice.

 

Sometimes this can come down to just about anything. I totally uninstalled the SU3 beta when they broke literally every aircraft in 1.5.9.0. SU2 gave me too many performance problems so I rolled back to MSFS 2020 and weirdly that also had issues.

I tried different GPU drivers, I reinstalled both sims multiple times, I rolled back PBO tweaks and I tested stability over and over, I tried everything.

In the end I decided to reinstall Windows and that has fixed everything. I have no idea what the problem was but the latest SU3 beta is running perfectly.

On 7/17/2025 at 1:22 PM, SayAgain said:

More serious hardware issues tend to freeze the PC (completely unresponsive) or reboot the PC.  PC spontaneous reboot is often related to power supply issue or power connection issue (not fully seated).  A complete system freeze is RAM or CPU or GPU issue.  CTD can be application code issue or RAM/CPU OC issue.

MSFS 2024 SU2 with many add-ons has been relatively issue free in terms of CTDs.  I’ve had one CTD that was triggered by GSX (coualt) and a complete system freeze triggered by nVidia GPU driver version.  Out of about 1000 flight sessions.

As a matter of fact Windows reboots may be caused by anything that triggers a BSoD (provided the admin has not changed the setting that tells the PC to boot automatically). Usually more serious (hardware) issues may freeze completely, to the point the BSoD "blue screen" don't even has time to be called/drawn, that's why sometimes the sounds get stuck in a loop as well. Plain CTDs indeed tend to be caused by software (higher level) errors which will not compromise the whole operational system.

If one is having a power issue, there will be no BSOD.

But the solution is simple, run Prime95, and run a few 3D Mark tests that work DX12.

If anyone does suffer any event that requires a power button to reset or non-graceful termination of the Windows OS, they should at a minimum run (as admin):

SFC /scannow  (multiple times if a problem is detected)

for more significant issues run:

DISM /Online /Cleanup-Image /RestoreHealth

(and 2 other variants)

Edited July 19, 2025Jul 19 by SayAgain