@giandeejay I've been using vulkan on my pi4 64bit bullseye (which uses KMS by default) setup for a while. I only use Retroarch emulators for its crt shaders but I've only noticed better performance with lr-flycast. lr-swanstation (duckstation), and lr-beetle-psx all perform worse than the software renderer. GL renderer was faster in lr-ppsspp. I haven't tried the n64 emulators.
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