@j0nn9 thanks for the new gapminer.
I second that, kudos to j0nn9.
Here are my thoughts from initially testing out the new crt miner. What I think is my ideal performance setup is setting roughly half the total threads to Fermat threads. My sieve-primes # is what I then fine tune on a particular shift size(near the end of fine tuning only adjusting 1000 on sieve-primes at a time then re-running for a minute to observe). The ideal behavior is the gaplist size generally(most of the time) stays above 100. It'll creep up to a 2000-3000 then oscillate back down to 100 and then continues in this see-saw fashion. The Fermat test speeds seem to kick in faster when the list grows and tamps down the list.
Those are my findings after only 24 hours. Two shift 512's so far. I parked my beefier server on shift 1024 for most of the day but gave up after the probability reached 170% with no solved block.