My game freezes at some locations and is not playable from that point.

So i had this issue that while leveling i would get rarely a screenfreeze for like 5s and then i could keep playing.
But now i hit 80 and wanted to do the Wyrmrest Accord quest, it froze at the north side and i had to restart. it worked.
Now and the south side where the burning castle is it froze again. And if i restart the game i get stuck at the loading screen. Had it loading for 30min. didn't load.
I thought maybe it's because i have the new models version, so i downloaded the old one. Same Problem (without addons).
I flushed my DNS, i run Malewarebytes through and it really found something... putting in into quarantine and restarting the game didn't help either.
What did work is the unstuck service, but that's not a long lasting solution, i flew over the castle again and the same thing happend.

I googled a lot and it seems like no one has found a solution yet.

Some areas are just badly optimized. I can't level up in Valliance Keep in Borean Tundra. It's a freezefest there for me.

Same here with Valliance Keep. There're more places (all them in Northrend, not happening anywhere else) where I do get ocasional freezes, but Valliance Keep is the top freeze place.

Just curious: which game client do you use? The "classic" one or the other with WoD models?

same problem i made a post as well , game is lagging like crazy fps-wise , at some spots like dragonblight middle to bottom-right the game stopped responding i had to do unstuck from website

The game is as backward as crazy fps. In the middle of the keel to somewhere in the lower right corner, the game stops responding. Can anyone help me?