Constantly getting "GPU #1 returned incorrect data!" on v12.0
v11.1 works fine.
Virtual memory size = 16Gb

SET GPU_FORCE_64BIT_PTR 1
SET GPU_MAX_HEAP_SIZE 100
SET GPU_USE_SYNC_OBJECTS 1
SET GPU_MAX_ALLOC_PERCENT 100
SET GPU_SINGLE_ALLOC_PERCENT 100

are set

UPD. In my case they are set via SETX but I think it doesn't matter.