Anybody knows why invalid shares is present? I'm in mining about 3 months, but only yesterday I had two invalid shares (on different cards). I use Phoenix miner now and use it about a week. Before that I used Claymore. And only yesterday I had caught 2 invalid shares. Can it be result of overclocking or no? Is it normal or no?
Every time I have ever seen an invalid share it is because the GPU clock to too high.
If you are right on the edge of being too high you will occasionally get one. I think if you back
the clock down by 15 or 20 that issue will go away.