https://bugs.winehq.org/show_bug.cgi?id=38169
--- Comment #5 from Adrian Kalla adrian.kalla@gmail.com --- (In reply to Andrew Wesie from comment #4)
This is a combination of two issues:
- Lack of implementation of ddraw7_WaitForVerticalBlank (bug 9154)
- CSMT optimizes for raw fps resulting in higher than necessary CPU usage
(bug 45761)
Bug 9154 is very likely the reason - see also comment #2.
Regarding bug 45761 I have my doubts, as Settlers 3 was always so slow with wine - not just after CSMT landed...