I have one question. Is this kind of error normal for R9 280X (3GB) GPUs?
http://i.imgur.com/oxQTWB5.pngFor 10 submitted shares ~one is incorrect. This GPU is not overclocked, tried different -h values, but with lower -h errors happen even more often.
Well I think older cards are not compatible with latest version miner. Maybe RX 4XX or newer have no problem.
Tried older version. Unfortunately, still the same.