Odd question...

First my parts:

2x r606
4x newpac w/ cooling fan
1x 7port gekkoscienc hub
1x  POWER SUPPLY / BREAK OUT BOARD / 6 24″ PCIE CABLES (419mining setup)

1x pi3b+ running raspian

Here is the question before the recen change to cgminer my newpacs were getting avg 110gh each

Bought r606 ran update on cgminer now they get 75gh avg... adding the r606 i got maybe comined of 1.2th

Is it possible to run multiple cgminers

1 for the newpacs and 1 for each of the r606
Or is it a waste of thought...

I am not even getting 2th with this setup

Something is not right

Thanks for any feedback