In July 2020 Rich Lambert posted a thread about the occuring performance problems especially in Cyrodiil and the plans for changes in gameplay mechanics like limiting group sizes and how AoE effects work for example. https://forums.elderscrollsonline.com/en/discussion/539136/update-on-cyrodiil-performance-upcoming-aoe-tests/p1

I can't speak for everyone, but i by myself had mixed feelings about it. On the one hand i was annoyed by AoE cooldowns tests for example, on the other hand i was glad that appearently something is done about the poor performance around primetime (playing on EU, don't know how the performance is on NA throughout the different timezones). So i endured the tests, since it was a limited time with maybe positive outcome in the end.
Even though there weren't big performance improvements, at least the disabled cross healing outside of groups was somehow promising regarding crashes at big keep fights, "slow bug" (which made some people in an area move really slow) and responsiveness like the time it takes to use a skill after breaking free, rolldodging or moving through a negate.

Quite some time later, the crosshealing got enabled again, which had a huge impact on the gameplay performance, bringing back crashes as soon as you entered an area near a big fight, longer periods of time to break free, skills not firing etc.

Now, around 8 months later, we had another test with disabled proc sets, which didn't have much improvement on mentionend gameplay issues.

Due to my own gameplay, I don't really care about proc sets or cross healing enabled or disabled. What i care about is the game's responsiveness and a fluid gameplay, which i favor more than any of the gameplay changes.

Now with proc sets disabled and cross healing enabled, for me the fluid gameplay is still non existent. And now we get a statement, that this will stay like this for the next ~6months?

With all the promised performance improvements and the endured tests, i can just simply not understand, how these decissions are made. The performance is still at the point where it is almost or completely (crashes etc) unplayable in primetime.

Disabling almost every set is a drastic change, that i didn't expect to happen for more than the testing period. Like i said, i don't really mind it, as long as i can use my skills properly and if it made the performance improve a lot, i wouldn't mind the disabling..
One big problem is though, that disabling proc sets includes sets like Vicious Death for example, which was introduced to counter faction stacking. Now, with proc sets disabled, the faction stacking became worse than it has been for a long time. And the game performance feels accordingly.

Why do we have a drastic change for gameplay and no drastic changes for perfomance improvements and even make it worse by disabling stuff to counter player stacking? It's really hard for me to understand, especially after all the testing periods that the playerbase endured for the potentially greater good.