Tooltips are extremely laggy

One more thing I just noticed: the tooltip for the wrench icon (Mass Update Members) shows in the wrong position sometimes.

Even reordering things in ACP (for example: reordering forums) is extremely laggy with v5 compared to v4 which is much faster/reactive.

This is unrelated to tooltips, but it's probably the same root cause. Not sure if it's caused by moving away from jQuery towards native JS, or if something else is slowing down everything.

I see some changes for tooltips in Beta 11.1, but I feel they're even slower now compared to the image I posted above. 😕

Finally someone explained the problem clearly😔