Hi everyone,
since I’ve updated from UE 4.7.6 to 4.8.1 I have massive performance problems. Maps that worked with constant 120 FPS are now running hardly with 20 FPS. Since I wasn’t able to find any solution and just some awnswers from Epic staff “Until now we weren’t able to reproduce this problem” here is what I found …
My system:
CPU: Intel Xeon E3-1231 v3
GPU: Sapphire Radeon R9 290 Tri-X OC (4GB)
RAM: 16 GB
OS: Win7 (64Bit)
UE: 4.8.1
All maps are running with full dynamic lights and all props are low poly.
[1]
http://fs2.directupload.net/images/150709/temp/g7dtx2na.png
This is a new map that I started in UE 4.8.1, It only contains a medium sized landscape and some lowpoly buildings. If I look in this direction everything is fine …
[2]
http://fs2.directupload.net/images/150709/temp/mp5vowji.png
If I turn a bit to the left the FPS drop by 40 FPS.
[3]
http://fs1.directupload.net/images/150709/temp/afpfhxkq.png
Switching to Wireframe or Unlit fixes the FPS back to 120.
[4]
http://fs1.directupload.net/images/150709/temp/astlbcja.png
The use RAM and VRAM is this Map is not quiet high even if the FPS are dropping down to 80.
[5]
http://fs1.directupload.net/images/150709/temp/m46b7k9a.png
If I load a Map i started making in UE 4.4 and alwasy converted to a newer version the required RAM explodes. It should use a bit more RAM because it’s already a detailed map.
[6]
http://fs2.directupload.net/images/150709/temp/gcntx22l.png
The Map is loaded and almost nothing is visible and the FPS drop instantly to ~45 FPS
[7]
http://fs2.directupload.net/images/150709/temp/9b52sjmh.png
Switching to Wireframe/Unlit doubles the FPS
[8]
http://fs2.directupload.net/images/150709/temp/q8zvq67c.jpg
If I walk around the corner and a bigger part of the Map is visible the FPS drop to ~20FPS
But now comes the interessting part. If I turn down the shadow quality to low everything is runing fine with constant 120 FPS. If I set shadow quality to medium, high or epic the FPS are always down at 45/20 FPS.
So I think there is a massiv problem with (dynamic shadows) in the current version.
Has someone found any other solution for this. This is a very big problem for me right now because I planned to prepare the announcement and a Kickstarter campagne with gameplay trailers and it’s not possible in the current version.
I would be pleased if there could be a a fix for this in the next days.
Best,