Resolume Forum

I'm using two cards in my system: RTX 4080 (connected to the main monitor) + Radeon W600 (6 outputs).
In Output Advanced, when I add outputs from the RTX4080 everything is fine, the FPS is high.
But if I add a screen using a single output from the W600, the FPS drops a lot and the processing of the W600 goes to 99% usage.
Isn't processing supposed to stay on the RTX 4080?
Why does the FPS drop so much when I use a W600 output if it is not connected to the main monitor?

Thanks in advance for your help

The processing stays on the renderer GPU, but that means the texture it rendered has to be transferred to the GPU with the output. That will come with a performance hit. So the best performance woudl come from a single GPU and external display splitters like Datapath FX4s

A lot depends on the drivers, and using two different GPU manufacturers is also probably not the safest way to go at it.

Does the CPU have enough PCI-e lanes to handle the GPUs?