@setlocal enableextensions
@cd /d "%~dp0"
REM
REM Example bat file for starting PhoenixMiner.exe to mine ETH
REM

setx GPU_FORCE_64BIT_PTR 0
setx GPU_MAX_HEAP_SIZE 100
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_SINGLE_ALLOC_PERCENT 100


PhoenixMiner.exe -pool eth-eu.sparkpool.com:3333 -pool2 eth-eu.sparkpool.com:13333 -wal WalletId.WorkerName/emailAddress -retrydelay 1  -tt 60 -tstop 70 -tstart 65 -fanmin 30 -Rmode 1  -minRigSpeed 40   -powlim 1:-45,2:-50,3:-50,4:-50,5:-50,6:-45 -mclock 1:+1400,2:+1380,3:+1380,4:+1350,5:+1400,6:+1300 -mcdag 1 -nvidia

The first part is to enable it to run as admin. The parameters powlim, mclock and mcdag helps you not to need afterburner, the other are general parameters, you can find them in phonenix documentation.

Hope it helps.