I have only seen one instance of lag since returning and it was extreme. And it was at Cyrodil and ONLY when a certain group of enemy players were around. Not sure how this worked but they were on that hill north of Bleaks and the minute you went up there you lagged. I pulled back and went around and there was no lag. Not sure exactly how these lag switches work but I know for a fact I have been hit by players in Cyro using lag switches. On that day every time that group of players was around, there was a lot of lag. I went down to BRK where there were 3-4X more players. No lag. I have seen this happen multiple times over the years. I am 100% certain there are players in Cyro that use some form of lag switch. Because I only see lag around a particular group.
Ok as for "other" lag, I have seen none in that last week of playing except around that one group of players. I think one of the problems is the stated minimum requirements to play this game. AND a player's internet connection. I play on a decent computer (Alienware Aurora R16 Gaming Desktop Intel® Core™ 14th Gen i9 14900KF (24-Core, 68MB Cache, 2.4GHz to 6.0GHz Thermal Velocity Boost, upgraded 64 ram, NVIDIA® GeForce RTX™ 4090, 24 GB GDDR6X and liquid cooling (added somewhere) because I've always been advised to have liquid cooling for games). I rarely see lag, even a cyro where there is a faction stack.
Another thing is internet connection. I once played with a GM that refused to pay for a higher speed internet connection. And the game was so laggy for him he quit. Some of the techies on discord told him to upgrade his internet package but he would not. I play on a dedicated business line that has the highest speed available (and we have 2 lines, my game is the ONLY application running on "my" line).
I don't recall ever lagging in a dungeon or overland content. Occasionally I will get a disconnect but not often (once or twice a month) I I play on full graphic settings except particle density because I don't like it. I've played MYM with no lag issues.
Any thoughts?