FWIW I don't think anybody's measured the effect of dynamic clock speed on skipped turns, only speculated that it should have an effect. For all I know, the timings coming from Java on modern CPUs could have so much variance that the dynamic clock speed doesn't increase the number of skipped turns that much.
Here I run a single client with blank config for a while so it calculates CPU speed alone, before dynamic clock kicks in. Then I copy config to all clients and run them in parallel.
The effect is they assume a worst case in CPU speed and skipped turns occurs less often than it should. Which I think is better than occurring more often than it should.