Oh, yeah, speaking of recording framepacing, I was recording essentially an iGPU app (browser) with dGPU's encoder, and it seems like Windows spends a lot of CPU time copying composited window frames from RAM to VRAM. Linux on Wayland fares better since window frames can be DMA'ed by dGPU itself due to some PCI/PCIe specifics. Soooo maybe I should've used iGPU recorder instead lol.
Maybe recording would fare better if I locked browser to 60 FPS, had too many tabs to sscrifice my browser just for recording though.
So the standalone app is kinda important for us laptop users liking to record (^_^);; so that we use Game Capture from OBS, which directly captures the game's framebuffer.