I can confirm P106-100 getting more hashes. About 26-27Mh/s
P104-100 crashes for me with straps 1/2/3 (even in default clocks). Will see with different driver tomorrow.
You can try this (from Readme):
-sintensity strap intensity for Nvidia cards, in %. Use this option to adjust strap intensity for Nvidia cards if even straps with lowest intensity ("-strap 1" and "-strap 4") are unstable on your cards.
To find best value, use "-strap 4 -sintensity 1" and see if it is stable. Then increase "-sintensity" value (maximum value is 100) to find best stable hashrate. Then try other "-strap" values.
You can also specify values for every card, for example "-sintensity 10,0,100,30".
Default value is "0" which means no changes in default strap settings.