Just tried this new version and it improved my hash rate in about 50%.

Rig setup:
2 x RX 570 4Gb
1 x RX 560 4Gb
OS: Simple Mining
Algo: Equi 144/5

lolMiner 0.4:
30 Sol/s
340w

lolMiner 0.42:
46 Sol/s
380w