Pitcairn is either a HD 7850, HD 7870, R9 270, R9 270X, or R7 370. In my case it is a 270.
Hawaii batch file
cd c:\zcash (or wherever your genoil.exe is located)
:restart
genoil.exe -c xxxx:xxxx -u xxxx.xxxx -p xxxx -i 20 -w 64 -g 0 1 2 -f 2 -k zec zec
TIMEOUT /T 10
goto restart
pause
Pitcairn batch file
cd c:\zcash (or wherever your genoil.exe is located)
:restart
genoil.exe -c xxxx:xxxx -u xxxx.xxxx -p xxxx -i 20 -w 64 -g 3 -f 2
TIMEOUT /T 10
goto restart
pause
Hmm ok. Was just a thought. Maybe try breaking up the cards into groups of two and using 3 batch files?