Hello, although the material is not very detailed, when I look down, the fps drops. Also, on other maps, FPS drops due to lights. I have to use Emissive Light
Hello,
Try pressing CTRL + Shift + Comma to profile the GPU.
You can try comparing the âsize of the bubblesâ for the different view angles.
Let us know if you find anything out with that method.
IIRC from the documentation, emissive-lighting under lumen is (essentially) free.
As far as performance questions, the usual would apply: what kind of machine, what resolution, scalability, etc. A LOT can go into this.
For all I know you could be running this on a literal potato? lol
Diagnostically there are a lot of STAT commands to help you out:
stat unit
stat gpu
stat scenerendering
stat rhi
stat memory
stat streaming
Also you can use f5 in-game to see the complexity of your materials (are they green/red?)
comma?
materials are green yeah
,you can also open the console (use tilde key, ~) and type ProfileGPU, hit enter.
Ok,now What Will I do?
It should have popped up something like this:
ref:
Short version, is you, the reader, will have to expand those twisties and drill-down to where time is being most-spent on the GPU. In my case you can see the scene-portion has 3 large bands of color, those are 3 steps that are each taking a long time. I can drill-down to where those are and see what is being done how/where, in very fine detail.
This GPU profiling can be insightful, but also very low-level, very deep. You MIGHT not need this, at all, if your scene is relatively simple; eg; I JUST started unreal and itâs crap.
Iâd start with the stat-commands I mentioned above. Also, Task Manager on the OS; you might just have the machine pegged⊠BTW, If this is running on mobo-integrated graphics Iâd be impressed with that kind of performance, especially in the editor⊠
Stats output looks like this:
Btw, in-editor, the performance is always crap compared to a standalone game. Itâs usually worth to test in standalone:
Happy digging!
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okay alright, I did what you said, all I see is âlumen lightsâ lol
all the stats output will tell you is where time is being spent in different parts of the engine. itâs like the profile on the gpu, but not in a gui form. it also provides different kinds of information.
at that point, it seems if you are spending a lot of time on the lumen portion of your project(?). i donât know much from there, but those are the kinds of tools you would dig into.
maybe itâs an optimization thing on your end, I have no idea what the scene looks like, based on that one screenshot, I have no idea of the rig running this either. maybe expectations are unreasonable; no ideaâŠ
from here, you would have to dig a bit since I donât have lumen-specific knowledge anyways.
best i can suggest is that lumen, nanite, and virtual shadow maps are all meant to run together. check to make sure you have those enabled, else, good luck 