The performance for the game is completely unacceptable, but everyone's already said that.

The combat feels awesome, but they need more monsters and content ASAP. It's definitely way too easy right now, but that'll totally change as Title Updates roll in. Rey Dau, Arkveld, and Uth Duna definitely are my favorite of the new monsters. Cephalopod monsters are a dope addition, can't wait to see more. Incredible final story boss from a lore PoV, too.

I've already finished the game (Finished story, finished every side quest, hunted every monster + Tempered including a few solid speedruns, made multiple mixed monster sets for various weapons, got best in slot decorations) at only 45 hours. That's a great amount of playtime for a modern AAA game, so it's worth the money for sure, but as far as Monster Hunter goes, it's a pretty weak amount of playtime. Again, the game can only go up from here.

I definitely recommend the game if your PC can run it. It's only going to get better from here on out. Maybe wait for the performance to (hopefully) be figured out, maybe even wait for the inevitable G Rank expansion next year.