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Unreal Engine 4 Rift framerate issues
Hi, sorry for spamming this post on two forums. Unfortunately we don't have a dedicated UE4 thread yet. Just want to improve my chances of somebody with a solution stumbling upon it.
I seem to have an issue with framerate when launching my scene in the Rift. The scene that I'm running is just a simple default 2 chair + table with sky scene when you open UE4. But it doesn't really matter, the issue is the same with more complex scenes. So I launch the scene, which gets opened in a separate window and I get 30FPS, which is not so good, but it makes sense since I'm still running UE that I launched from in the background. As soon as I close it, the framerate jumps to 60FPS. So far so good. Now the problem comes up when I go fullscreen on this window with the Rift turned on. It switches to side by side stereo Rift mode as it should, but now my framerate drops down considerably to about 23-27 FPS (regardles of complexity of the scene). If I go fullscreen without the Rift the framerate stays at 60FPS. This is most likely something that has to do with the implementation of the Rift drivers so I was wondering if anyone came up with the solution for this problem. Just to let you know that I have a high end graphics card (MSI HD7990) that is able to run Crysis 3 on highest settings at 60FPS without breaking a sweat, so horsepower is not the issue here.
I will be grateful for any kind of help on the matter. Even if you can just confirm if you're having the same issue or not would be great. Thank you!
I seem to have an issue with framerate when launching my scene in the Rift. The scene that I'm running is just a simple default 2 chair + table with sky scene when you open UE4. But it doesn't really matter, the issue is the same with more complex scenes. So I launch the scene, which gets opened in a separate window and I get 30FPS, which is not so good, but it makes sense since I'm still running UE that I launched from in the background. As soon as I close it, the framerate jumps to 60FPS. So far so good. Now the problem comes up when I go fullscreen on this window with the Rift turned on. It switches to side by side stereo Rift mode as it should, but now my framerate drops down considerably to about 23-27 FPS (regardles of complexity of the scene). If I go fullscreen without the Rift the framerate stays at 60FPS. This is most likely something that has to do with the implementation of the Rift drivers so I was wondering if anyone came up with the solution for this problem. Just to let you know that I have a high end graphics card (MSI HD7990) that is able to run Crysis 3 on highest settings at 60FPS without breaking a sweat, so horsepower is not the issue here.
I will be grateful for any kind of help on the matter. Even if you can just confirm if you're having the same issue or not would be great. Thank you!
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- I haven't heard this one before, but I will check with the engineering team.
- Which version of ue4 integration are you using?
- I have the same problem, even the simplest scenes are unplayable in riftmode due to low fps.
I'm using 4.0.2 - http://www.reddit.com/r/oculus/comments/28a3ul/fps_of_some_rift_apps_at_1080pnovsync_on_gtx_780/ci94ji1
Perhaps this is the issue, with UE4 making some huge buffer? I'd try lowering that value as the comment I link suggest and seeing if that makes a difference.
