"GPU returned incorrect data error" 7950

One of my GPUs is throwing out a constant stream of "GPU #2 returned incorrect data!" errors but seems to still be submitting valid shares at the same rate as my other cards. It's a rig with 4x 7950s running at stock speeds (925 MHz GPU clock, 1250 MHz Mem clock) and all are running below 70C with fan speeds set at 85%. Most people with this issue seem to have much higher temps or big overclocks. Using claymore 12.5 and crimson 15.12. Also, adjusting the intensity does not seem to help. Has anyone else run into this or managed to fix it?

My Config file looks like this:

 

-zpool stratum+tcp://equihash.usa.nicehash.com:3357

-zwal

-zpsw x

-tt 75

-i 4

-powlim 20

-a 2

-asm 1,0,0,1

-allpools 1

-fanmin 85

 

My Batch file looks like:

 

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

ZecMiner64.exe

 

Thanks for the help!

suggestions:

-a 0
# -asm

this isn't going to fix the issue but I might also put the -fanmin 55, since the -tt 75 is going to keep the card from going above 75c