Thanks for the tips,
About fonts size, I winetricked corefonts with no effect but anyway I'm now stuck with Native Access that can't even load.It thinks I'm on a mac
I'll see if I can find an older Kontakt Player to escape all that NA crap.
About wininet, I tried adding nsi.dll override but it didn't help for the lagging start.I'm running Wine 2.15 (not stagging version) from Arch official repos.