280x 3Gb
nanopool 250-260H/s - after 8 minute work 25% rejects (on v10.0 same situation)
dwarfpool 300-335H/s immediately after start many rejects 5 min >30%
win 10 driver 16.10.3

it is my problem?!
UPD: algo 2 intensity 7, no overclock, no bios mod