As a consultant, people complain about performance, then IT comes along with a spreadsheet and declares "our numbers say performance is acceptable". It doesn't matter what the spreadsheet says, it's what the user feels. Your number may be in the "acceptable range" but to the user it still feels like ****, and they won't want to to use the product. It's all about perception.

Playing my melee toons no longer feels good. Especially my monk. It doesn't "feel" right anymore.

You still kill stuff in approx the same amount of time, in fact Amrath quests seemed easier. Devil's still hit 99.9% of the time above 65 AC but they hit softer, and everything's hit points seem to go down faster.

Weighted. Whatever. Stunning fist at 39 DC hits about 5% of the time. Useless. Nerfs.

I still have Bard, FvS, and casters that I can play, but for me there's too much changed, and it all feels wrong.

For me I think it's time for a break.