I recently went through five ASUS PG279Q monitors, every single one of them had massive white uniformity issues. Basically there were yellow-tinted patches on the screen which you could easily spot, as shown on this image: https://imgur.com/nYcpLQa
People said that this is a known issue of the AU Optronics panels, but apparently Acer (who uses the same panels) has better quality control so you're less likely to get a defective unit... so I bought the XB271HU and... it's the same issue. Granted, it's to a lesser extent, the discolored patch is in the upper-right quadrant, but it's still there. When I scroll a page with bright backgrounds and follow one spot with my eyes, I can see how it changes from brighter warmer tint in the upper area compared to the lower area and the whole far right side has a much cooler/darker tint. Here's how it looks like: https://imgur.com/xdyoIaX
My question is - do you have these issues too? It looks like everybody keeps focusing on the backlight bleed, yet none of those 5 ASUS monitors or this Acer had any bleed, but all were non-uniform. Did you check for uniformity? I know it's a "gaming" screen and you may not notice it in gaming, but when you open a website with white or gray background or scroll through your mails in Gmail, do you see the change in color temperature either left-to-right or top-to-bottom? I wonder whether a uniform high-speed IPS panel even exists.