They make a lot of apus for gaming handhelds, I think they do well in that segment. I've had a handful of desktop and laptop apus with no complaints. Even an APU with ecc support, they've all worked without a hitch. I haven't tried transcoding anything on them mind you.

Yes, I have Steam Deck and it works great. But I also have 2400G and 5700G and both of those have graphics issues (tested with different recommended RAM sets).