Amazing.
1. What is your system RAM and HBCC setting?
2. press 'r' to see if the shares are correctly. Pool diff / hashrate should nearby the avg. time.
mining several hours,
https://imgur.com/CknvPMo
with No error. is it ture hashrate??
my test rig set up
CPU:intel core i5 6400
memory:DDR4-2133 8GB
systemdisk:samusung sm961 256GB m.2 pci-e
PSU:500W
virtualmemory:32768MB
I have no idea, the diff is changing... what about your pool report?
And if you increase the memory clock, will it get more hashrate?
You can try use hwinfo64 to monitor.