At least on a low end cpu i-0 provides the highest hashrates on 4.0. Thanks Claymore! No complaints about fee whether Eth miner or Zcash. EVER!
Confirmed on Pentium G3240. i-0 Getting 75-80 with both rx470s and 480s under 50% cpu.
Changing to i-2 lowers H/s by 5-15 and at least 75% cpu use at all times.
Thank you Claymore, you deserve the fee for your work!