How can I fix the blurry icons in the icon tray?

[MichaelKanRS]

My display is 2560x1440p and whenever I alt+tab from a 1920x1080p game, the power icon gets blurry. How can I fix it? What it looks like:

 

[Sergeant_Sneaky]

My display is 2560x1440p and whenever I alt+tab from a 1920x1080p game, the power icon gets blurry. How can I fix it? What it looks like:

I'm guessing it's because it just switched from 1080p as the game is using that, strange it only happens on one icon though, I don't suppose there is a fix except changing your desktop resolution to the same as your game, which I'm sure you won't want to do.