Pretty good

If you mean v11, then I haven't noticed any differences from v10 with the applications I run.

What did you want to run under it? You could check the appdb to see if there's an entry for it already: https://appdb.winehq.org/

Depends what you want to do with it. Most desktop apps don't work so don't expect it to be perfect. Games are one thing, desktop apps are something else.

just use/test it for fucks sake instead of asking whole lemmy nonspecific questions about it