When i start to render a 3,5M triangles scene at 2560x1440@100% 300 Samples, 256x256, my pc starts lagging and it didnt finish to render 2/60 in 5 minutes.
When i then set it to CPU with all 8 threads, same settings but 16x16, it renders in 2:30 minutes without any lagg at all.
Are there any settings im missing?
i tried googling, but everything seemed as old as gtx 500.
Also to add, the render is a simple clay render, no material, one camera and a HDRi@256x256
This will not solve your lag problem, but enabling SLI is AFAIK bad, bad, bad for GPU rendering. GPU rendering will use all of your GPUs regardless, but SLI seems to create so much overhead, that you might see up to 50% performance loss (or so I’ve read).
However, the laggy interface issue might only be solvable by using a third, dedicated GPU not used for rendering but just for viewport display.
Alright, it works great without SLI now, and i didnt encounter any lagg either, so thats good. the viewport render worked kind of with SLI, and it feels a bit faster too.
