Dipfelle Please boot into BIOS and disable CPU Turbo Boost, which is likely buried in Advanced settings and may be called something slightly different. The name should include "Turbo" though.
If this isn't helping, please test the game long enough to get at least three crashes with the setting disabled. Then look for look for new errors in the Reliability Monitor. Hit Windows key-R and enter "perfmon /rel" without quotes, and you'll see a chart of errors and updates with a column for each day. Today is on the right.
I'd like the errors from the most recent crashes, everything post-BIOS setting change excluding duplicates. (For identical errors, you can just say "I saw two of these" or similar.) For any error you find, double-click it to see more details, then copy that info and paste it into a reply here. If you don't see a new error, check back in an hour or so—the Reliability Monitor doesn't always update right away.