https://bugs.winehq.org/show_bug.cgi?id=41107
--- Comment #18 from katsunori.kumatani@gmail.com --- Hi, just tested with wine-staging 1.9.22, it's much faster now, but still noticeable on folders with a large amount of folders inside. This happens only with a lot of folder icons for some reason, any other files and their icons are instant. (i.e disabling icons makes it instant)
I know you reduced the timeout and consequently made it much faster (thank you), but I hope you don't stop thinking about this bug if you can somehow make it better, as it clearly is not supposed to work this way.
For example the other problem with the very old Winamp plugin Enhancer_017 is still there and it's the same bug (it is also faster there, but still noticeable). i.e it slows down other applications that rely on wineserver.
If you use an application with a huge "tree view" list (like Plogue Bidule's parameter list after you inserted a Spectral->Graph) and have Winamp with that plugin open (even in background/minimized and not playing), it will be very slow to select/move through the tree in Bidule (1 sec delay). Of course it's instant in normal wine. It also is instant if you put Winamp in another prefix, because it's a different wineserver.
And it's "faster" with this reduced timeout than it was previously so I'm 100% positive it's the same bug.
Sorry if I was too verbose but I just felt like I had to give some feedback with latest changes. But yeah, stupid bug is still there just less noticeable :(