https://bugs.winehq.org/show_bug.cgi?id=28842
--- Comment #7 from Bartosz gang65@poczta.onet.pl --- The performance on Wine 8.16 and native gdiplus (winetricks gdiplus), is the same.
There is some slowdown between switching the tabs, but it is also appear with native gdiplus.
It seems that the original problem was already resolved.
It could be closed as FIXED.