I've had many issues with AMD to be honest. I have used a Vega 64 in my desktop and a Radeon 680M in my laptop and both experienced numerous hard system hangs. The Vega 64 eventually got better, but the Radeon 680M is still dealing with a lot of ring0 hang issues: https://gitlab.freedesktop.org/drm/amd/-/issues/2220. I mostly get these hangs when using Firefox's hardware accelerated video playback while running in Wayland. People in that thread seem to think its an issue with accessing VCN.

Regarding video acceleration itself, the Radeon 680M also seems to not work properly in Firefox. Videos will frequently get stuck on a frame before continuing normal playback after a few seconds.

Meanwhile, my Nvidia 3090 on my desktop has been working without issue. Sure you don't get Wayland, but I don't really have a need for it just yet and I vastly prefer being able to use DLSS and raytracing. Wayland also needs a few patches to enable tearing protocol support and a few other fixes that help input latency before I switch over. The upcoming Nvidia 545 drivers are supposed to help out their Wayland support quite a bit, so I am excited for that.