Copying my comment from the spx labs blog post, since it may be more appropriate to post here.
Hi! Really nice tutorial. One issue I'm having is high CPU usage in the OBS docker even when idle. I'm trying to use my GPU for encoding the video, and that part works, but the CPU usage of OBS itself (without encoded video) is too high to be feasible. Did you see this behavior as well?
I wonder if this is because the CPU is being used to render the OBS scene compositing. Is it possible to use the GPU for this as well? Would this require a different Ubuntu Gui container base? Is it even possible?