https://bugs.winehq.org/show_bug.cgi?id=38169
--- Comment #8 from Adrian Kalla adrian.kalla@gmail.com --- (In reply to joaopa from comment #7)
Bug still occurs with wine-5.1.
Interesting thing: it does *not* occur for me anymore with wine-5.5-staging *if* I disable "CSMT" in winecfg - in this case the game uses less than 50% of a single core (still more than on Windows, though).
If CSMT stays enabled (the default value), then the problem persists.