this is the first time i play d2 resurrected on ps4 and my oh my even on a single online game lagg is terrible
is there someone can maybe help me on fixing the issue or its a known bugged since day 1>?

Ive heard an SSD is a major performance upgrade and reduces loading times significantly. I havent tried it myself because ps5 but you should look it up

Be sure to reinstall or move d2r to the ssd or else it won't affect gameplay I think

PS4 Pro runs well, but the loading in and out of games / acts is still annoyingly slow.

PS5 runs very well. Minimal loading times and no lag or anything.

well i figured something out this morning i do some changes on my wifi connections. its actually good now when i am joining a game of 3 no delays when doing some actions in game on your char teleport seems to work ok but i havent try doing some runs like actually with players like on chaos run with 3 -4 peeps.