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wormhole1234
New Participant
July 22, 2016

'ProfileGPU' shows SlateUI taking lots of time

Hi,

I run into a performance issue with DK2, 'ProfileGPU' shows SlateUI taking much time. I'm trying to get the latency down to <14ms, but profile tell me SlateUI consume much time, it's weird, I don't have any UI element showing on the screen. I think SlateUI is not recording UI drawing time. Through the source code, it seems like it's related to copying final render target to back buffer, rendering to two views and flush/sync. Does anybody have similar issue?

Thanks for your help
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3 replies

wormhole1234Author
New Participant
July 25, 2016
Doses anybody know this problem?
vrdaveb
Inspiring
July 26, 2016
If it's in the editor, then that might be competing with you for resources. Try making a build. How many widgets are being processed? Are you binding to blueprint functions? Those can be slow. Also check this UE4 answers thread.
trsbrockheinz
Up and Coming
August 26, 2016
If you're seeing this when profiling on the phone (not in the editor), then the profile tag misleading. It's not actually spending a lot of time rendering the UI. What it's really waiting on is for all of the other render commands to be processed by the GPU.
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