My solution is to lower the brightness to 0% and then the lower the contrast, but the contrast must be above 0%, 5-15% depending on light and moonlight or burning vehicles etc. Have worked for me for years. I play on 1440p on a 4k screen. Might not be the best for searching and loitering a target area but if you have references to go by you should be able to pick out alot faster, especially if the sight locks when you think you see a target while going in for a run.