I think its important to understand that this "Year of Perfomance" was really just pr talk for prepping the game for Stadia launch.
I dont belive for a minute that it was necessary to move so many calculations to server side, if it wasnt for the fact that they
had to massively reduce the amount resources the client uses for Stadia.

I dont think the devs wanted to have all the massive desync issues this caused, but had to stick to it due to Stadia.

At the end, pve overland quest crowd probably dont even notice many of the issues, the so-called performance fixes have brought.

The going theory is that the higher-ups already knew about the Microsoft merger possibly happening, and thus wanted to make the look as profitable as possible.
This meant putting the game on as many platforms for box purchase and crown store sales as possible.

I dont think the actual devs wanted the massive degradation in gameplay their "perfomance fixes" has brought, but its unlikely that they had a say in the matter.

Sadly , this is the reality we live in, where profits are above all else.

Replace “still bad” for worse. Performance in PvP is worse!

I understand Cyrodiil laggy.
Sometime, Battlegrounds a little laggy too.
When the lag happened in Maelstrom Arena, I prayed to Sithis.

Haven’t stepped foot in Cyrodiil since early 2020. Was completely put off by the performance and probably won’t go back until the make serious changes. But I have no problems in battlegrounds