High frame time despite low CPU and GPU usage ?!

Hello,

I’m running into an issue I can’t really figure out. I have a game which should run fine but does not. Game, Draw and GPU times are around 10ms but Frame hangs around 30ms and renders the game nearly unplayable.

But what could cause this and whats the right way to debug it? I tried to remove all AI and turn down visuals as much as possible for a test. Game, Draw and GPU times reduced as expected but frame was still extremly high.

Does anyone know something about this?

Thanks!

Where might you be testing the game? If you are in PIE and you have an intensive blueprint open in the background it will run unusually slow. The editor can bog down performance in testing… Have you experienced this while running a stand alone game test?

Tested this with a packaged game on PC and Xbox Series X Dev Kit, both with the same behaviour, which just does not make to much sense.

As I mentioned I disable all AI and vehicles and turned down basically all visuals . The Game and GPU times go down accordingly but the Frametime is still up high.

There is basically nothing in screen more at this time and GPU and CPU profiles don’t show any issues.

That’s what is confusing me. There is just nothing which could even indicate the high frame time.

No. In the test case there is basically nothing. The default spectator pawn. All other actors have tick disabled or running at a very low custom tick with light instructions.