So, I put yuzu on my GPD Win 4 (6800 version) to play my legally obtained and personally ripped Switch games, but I found that a lot of games would crash pretty quickly. Doing some troubleshooting I realized if I changed NVDEC from "GPU Video Decoding (default)" to "CPU Video Decoding), the crashes went away.
Yesterday, I upgraded my GPU drivers to AMD Adrenalin 23.7.1 and noted that now yuzu crashes whenever NVDEC is used even if I have "CPU Video Decoding" set -- I have to set it to "No Video Output" to stop the crashing and then the NVDEC encoded videos don't play at all (which is, I suppose, to be expected with that setting).
I presume that NVDEC doesn't work on the GPU because it's an nvidia specific decoder, so it needing to be CPU decoding makes sense as well. What doesn't make sense is why CPU decoding breaks on 23.7.1.
It can be worked around, downgrading to 23.5.2 solves the issue.