https://bugs.winehq.org/show_bug.cgi?id=38043
--- Comment #1 from Ken Thomases ken@codeweavers.com --- What version of Regen did you test with? I see 0.972 and 0.972 SSE2 at the site you linked.
I assume one needs a game ROM to see the problem. Is there a legally freely-available ROM that I could download to test with?
In the meantime, when it is running, is there a wine process using ~100% of a CPU or more? Or are they using much less CPU?