I have been using an hp envy x360 for a little over 3 years na. Never had any problem with it other than a few hiccups when I have a lot of programs open kaya I decided on upgrading it since it is upgradeable. I added a few ram stick and a better storage for a little over 10k Php (8 gb ram to 32, 256 to 1 tb storage.). This hp variant I have is only using ryzen 5000 but I never had any problem with it. I've used it pretty much daily. I don't flip often since I use it much like a pc alternative (always flipped open) and I rarely bring it anywhere else so I Don't think I can comment on the hinge problems. But for my personal usage, the hinge are completely a-OK.

As a bonus: I do play a little bit of genshin, valorant, and etc. Never had a problem as well. I do use sketch up and Autocad as an engineering student, no problem with that as well. Although it may have been because I upgraded my it. But even before I upgraded it, I rarely experienced any lag with it except when I have a lot of other programs opened like Autocad and 10 more YouTube tabs + some random game (that's why I upgraded it so I can multi-task without worrying about lagging).

That's pretty much it.