> that there is some slowdown (~250ms) Do you mean it takes about 0.25s for the process you launched to start after you told Wine to run it? Every time you bo

> that there is some slowdown (~250ms) Do you mean it takes about 0.25s for the process you launched to start after you told Wine to run it? Every time you boot a Wine prefix, Wine has to "simulate" a Windows boot process (launch Explorer.exe and any other startup services, enumerate fonts and devices, read the registry from disk, etc). You can leave the prefix running in the background, which means it will start your process without having to do all the cold boot stuff. See the "-p" switch to wineserver.