setx GPUMAXALLOCPERCENT 100
setx GPUUSESYNCOBJECTS 1
Vertminer.exe --scrypt-vert -o stratum+tcp://h2o.imine.at:8787 -u USER -p PASS -w 64 -I 12 -g 1 --thread-concurrency 8192 --gpu-fan 55 --temp-overheat 90
EDIT - I have 2x radeon 5870. Older cards, so my TC is low.
just REM or delete the setx parameters in your *.bat file.
The vardiff at that pool is set too high. 512? You shouldn't be higher than 256. With 512 vardiff and your hash rate, you can't submit shares fast enough before the next block is found. I bet the person even has multiple machines all on the same worker, which is really bad.
You would not have had any issues if you created multiple workers for your rig/rigs.
I have lowered the pool vardiff to 256. That should cover you guys that are using a single worker which you should NOT be doing in the first place
But smooth sailing, cheers