Stuttering/Freezing When Zoning

[WOWBOX40]

After much testing, my only conclusion is that there is something wrong with the shards and phasing in the game?. The freezing spikes, from 5 secs to 2 mins happens during logging in, transitions to new zones (but also within a zone), taking portals between locations, also with mageportals, in and out of raids, the moment you turn in a quest / finishing events and more. It doesnt matter if i move from a busy area to a very low pop area etc, the same looong gameplay freezing happens. Sometimes, a “clone of a character emerges” and i have to relog that character, that sees the clone.

All games run on settings 1 ingame, directx-11 legacy. Tried the others aswell, but no luck. I made sure after the patch to revert all settings back to the lowest possible. I dont use any raid / bg spesifik gfx settings (disabled).

5 man = almost no lag (mostly those 5 sec freezes).

10 man = almost no lag (mostly those 5 sec freezes).

The main problem:
More than 10 (to 20) characters at the same location / doing/going to the same spot / in and out if a area where a invasion takes place = looong games freezes, very rarely 5 sec freezes here.

Doesnt make any difference, no addons or with all addons. All pcs are operating at normal temps etc, no bottlenecks, drivers up to date, making sure the grafixcards are selected as primary option. Else there is nothing out of the ordinary. Different pcs, all freeze etc at the exact same time. Game related?

Anyone else have similar experiences with 10+ characters / raidgroups?

Sidenote:
when this freezing starts, i cant open any other programs or do anything else, which is not wow related. The freezing is halting the entire pc(s) for the duration. Ive been running hwmonitor on all pcs and checked, but the values arent out of the ordinary, during these “freezes”, which can last up to 2 mins at a time.