[BUG] High CPU Usage First Launch and Later
My system is giving me high CPU warnings with Rocket, well before the app is even bootstrapped.
On first run, after all materials have been processed, and I'm presented with the New Project dialog... my system is sitting at a solid 80-90% CPU usage across all four cores.
Later after naming my project and opening the editor, I see the "Compiling Shaders" notification. Is UE4 per chance compiling shaders in the background while the New Project dialog is open as well? The notification is informative but you don't see it until later if that's the case.
After shader compilation is complete, I sit at about 60% CPU usage across all cores when the editor is idle and I have the default geometry (empty project) loaded.
asked Mar 11 '14 at 03:50 AM in Everything Else
ue4-archive ♦♦ STAFF
We're seeing the same kind of numbers here. So we've gone ahead and entered this issue into our database for investigation.
We've shipped Rocket with pre-compiled shaders, so you should never see that message more than a couple seconds. The fact that you're compiling shaders explains the high CPU usage. I tested your installer and was unable to reproduce this. Did you by chance move/rename the Rocket install directory?
Looks like you also encountered a similar problem after your project was renamed. This broke the reference to your DDC (shader cache), so it attempted to recompile your shaders. This is a known issue that we're looking into. Thanks for your feedback!
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