Mysteriously high PostInitViews FlushDel is reducing Performance in Standalone Game

Hi there,

I am in a strange situation. When I launch the game in Standalone Mode and profile it, I see that it is so slow because in the RenderThread “PostInitViews FlushDel” is so high (>10ms. I also checked it while showing the ingame stat “stat initviews”. But when I play in editor/selected Viewport, the value is only <1ms, which seems normal.

You could help me very much, if someone could explain to me, what the value “FlushDel” means and why he could be so much higher than for example “View Visibility”, which probably isn’t normal. I get that the whole Init Views section is related to Ambient Occlusion but as you can see in the buttom window, there aren’t that much primitives.

Sadly I have no idea at which point this problem occured since I mostly play in editor.

Greetings and ty

I have met this issue recently. After investigation, In my case, PIX shows that may be related to Occlusion Query, On the Thread Stall Details page, the ‘PostInitViews FlushDel’ thread stalling is awaked by RHIThread, which just finished Occlusion ReadBack.
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