https://bugs.winehq.org/show_bug.cgi?id=47115
Matteo Bruni matteo.mystral@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Component|wineserver |-unknown
--- Comment #1 from Matteo Bruni matteo.mystral@gmail.com --- Is the stutter limited to just the first explosion in a game session? If so, I suspect that's mostly to do with compiling shaders / pipelines. Updating the drivers will effectively clear the shader cache, so you'll get the stutter again the next time you play.
The hang on exit is probably unrelated, you should open a separate bug report for it.