Please use a batch file to start the miner with the following contents (the important part are the setx statements to set the environment variables):
Code:
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 -clKernel 1 -pool eu1.ethermine.org:4444 -pool2 us1.ethermine.org:4444 -wal 0x36fd6ca7b320c46189bb9e78f5390573cace4745.Rig003 -proto 3
pause
Still the same problem. Occurs on different GPU, sometimes on 2 simultaneously.