Cycles=max/auto on recent faster/overclocked Intel Core processors (*600+ K) produces too much junk cycles and causes a lot of stuttering. Even 10% max is affected

Yeah, setting a (high) limit works though.
I did a long session with a member of the forum, (sending builds and logs to each other) and while I could see the problem clearly happening in the logs, I couldn't 100% figure out why it was happening. Sometimes, the fast intel cpus appear to be capable of doing a lot more work in the same time frame compared to other time frames. (or needing less time for the same amount of work) Which causes the max cycles to jump up.
It's annoying that it doesn't happen on my pc, as that would make fixing it a lot easier.

I can fix it by making the cycle scaling code more conservative when the current cycles are already high (so limit the upscale when the cycles are above 50.000 or so), but ideally I'd like to do a lot more tests on more fast intel processors.