I am new to unreal (came from working for years in unity). Everything seems good so far apart from some form of lag I encountering in the editor.
I am using some nanaite and lumen, however after working in the editor for say 10 minutes or so, I start experience a huge drop in FPS (going from 85fps down to around 10 - 15fps.
To remove the lag, I can change the layout to a double pane and it instantly goes back to 85fps. I then swap back to single pane, and work a bit more, then it will all of a sudden start slowing down again.
This happens even on scalability of high, and I am running a 4090. Has anyone else experienced this in Unreal 5.1 and does anyone perhaps know of a solution?
Thanks for the reply - It works fine in other scenes.
I think I have managed to narrow the issues down… My scene is an interior scene with 14 spot lights. I am also using raytraced shadows.
It seems if I edit the lights to have a source radius i.e 2 or more, there seems to be eventually some kind of lag. It doesn’t happen straight away and can take anything from 2 minutes to 10 minutes. As mentioned above, changing the UI/layout fixes the issues instantly.
If the raytraced spotlights don’t use any kind of source radius, the issue never occurs.
What I find weird/interesting is that its a gradual thing and likewise by changing the UI my performance instantly jumps back up to what it was before. Could it be some sort of memory leak when using source radius with raytraced shadows?