https://bugs.winehq.org/show_bug.cgi?id=57121
--- Comment #2 from Alexey Kuznetsov axet@me.com --- It doesn't matter if game is located on SSD or USB stick. As soon high IO starts to kick in to slow USB stick device (downloading / copying files) wine games start to stick keys.
Linux is not affected. Keys working fine in GNOME. Only wine is affected.