1345m [2021-10-23 22:13:06.008] 0.00 H/W 693.68 MH/s 694.60 MH/s 9678/41/200 (99.58%)
Should I be concerned about the rejected shares ?
99.58% is a good result on nicehash. I see that you run with --xintensity 224, you can lower the xintensity to remove stales, but then the hashrate will drop as well.