4K gaming

[MrBehemoth]

Give me some statistic comparisons. Currently I'm pretty pessimistic of this method being more effective than regular anti-aliasing on lower resolution.

Googolplex is right. This kind of down-sampling is actually how anti-aliasing works in the first place, so increasing the resolution will improve the quality of the anti-aliasing, and the anisotropic filtering too. You can see some comparisons here.

Unless you have an absolutely kickass graphics card setup, the real question is: is the graphics quality gain worth the performance loss?

On my system the answer is no.