Giant performance drop after upgrade 4.14 - 4.15.2
after upgrading to 4.15 I have a big problem, to be more specific, a ~50 FPS big problem.
In 4.14 I had average FPS of 50 - 60 in Fullscreen and now I'm struggling between 10 - 15 FPS.
This game is a roleplay game and the world is pretty much focused on nature and I only upgraded because of the issue with the foilage paint tool in 4.14 and now it's basically a headshot, since the editorperformce is really problematic now.
What can I do except reverting the project back to 4.14.3?
Please don't ignorre this topic.
I typed that incorrectly, it should be HZBOcclusion, not HBZOcclusion. This seems to be a different issue however as you're not getting a large amount of frametime in HZB mipmaps. This may be related to another issue we're looking into which can be found here: UE-44841.
This issue specifically started in the 4.15.2 hotfix, so if you're on 4.15 or 4.15.1 you can ignore the following information, but if you are on 4.15.2, you may be able to fix this by taking the change at this commit on Github. Fortunately, it's only a 1 line change. If you have a source build already, you can make this change and have it immediately. Otherwise, I would suggest getting a Github source build of 4.15.2 so that you can add this change (Note: This change was made directly in 4.16 which I do not recommend developing on at the moment, as it has not yet been released.)
It would be helpful if you could try this to see if it helps. If you have any questions about getting a source build from Github, you should be able to find that information here.
answered May 12 '17 at 05:31 PM
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