Low FPS after latest Windows 10 update KB5003173

Bug Reporting Hub Install, Performance & Graphics
1

I installed the latest Cumulative Updates for Windows 10 yesterday (KB5003173) and once again its screwed the FPS! :rage: No joke lost 15-20 FPS, its a slideshow now at 10-15 FPS during the approach. Was getting easy 30-35 before.

2

hi! did you tried to uninstall it? I did not notice any performance degradation…

3

I haven’t tried to uninstall it. My next flight was better, but still got lower FPS during the approach phase (20-25). I noticed similar performance degradation after an update a month or two ago, and a fix was released soon after. There seems to be so many issues affecting MSFS that quite often I have one good flight, then the next time I open the sim performance is completely rubbish.

4

If I found problems with any windows update I usually uninstall and block windows update for a while

try to uninstall it and compare performance , perhaps system needs to accommodate all stuff

5

If the same Windows settings you use for FS remain, an Windows upgrade cannot change the way FS runs. (It can only be a coincidence.) If you are using Windows Defender and are not using an external anti-virus program where you can bypass scanning of FS areas, this may have been a nuisance.

6

I just disabled anti virus and defender, started a flight with good FPS 40-50. But 20 mins in its dropped to 20-25 FPS. My belief is the performance degradation is deep within the coding of the sim, it has been effected by updates in the past, and then Windows has released an update fixing the issue.

7

A quick search would have found this:

It has had no effect on anyone in that thread. Your cause must be something else.

8

This is how the past few months of my MSFS experience has been.

  • Before KB5001330 update: 40-60 FPS, no to very little performance difference during different phases of flight.
  • After KB5001330 - 20-30 FPS at start of flight. SLIDESHOW - 10-15 FPS during descent/approach.
  • Installed the fix for that update (is that the KB5001391?) - FPS improved, maybe average 25-35, but not back to the previous performance
  • Installed the latest update a few days ago, and back to the rubbish performance degradation as experienced before.
    I find its only with glass cockpit aircraft, there is something in the rendering/displaying of the screens that is effecting the FPS differently during the flight e.g. start the flight and FPS is 40-50 but by approach/landing its dropped to 15-20.
    We’ve seen AI aircraft cause HUGE performance degradation before, something else could cause it again…
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