Hello, I have an unusual issue with my PG279. It is hard do describe... I see some random pixels flickering when it is blue or other (?) color, but everything is ok with white or black colors, for example... I will include some photos. And one more thing - it is almost unnoticeable when the monitor is running on 60Hz and very significant on 144Hz. Tried HDMI and Video Port, changed computers, updated drivers, changed power supply - no luck. Please help...