Hey there,
I'm not exactly sure what you mean. Practically every single game in the last 10 years supports some form of anti-aliasing tech.
What games do you play? What resolution is your monitor?
My monitor is 1920X1080, 144hz. I don't think it's the monitor because i used a second monitor to test it, and it doesn't change it .
I am telling you, EVERY single game , GTA vice city, minecraft , Resident Evil(all of them). Even games like Goat Simulator and Fallout Shelter or Counter Strike: Source and CS:GO. (note that these are examples, so if a game just doesn't support AA , it's not it. EVERY game doesn't work.)
The thing is, back in the summer, i didn't have this problem AT ALL.
Here are the things I changed from then, maybe they have something to do with it:
I bought an SSD and changed Windows' location to it.
I rearranged my cables inside the computer so it would have more breathing space. I put them around the back of the computer.
The computer is now on the floor rather on the table.
[I'm thinking of tracing it down to the windows change, but i've reinstalled it and nothing changed(i don't think i reinstalled right either). I would also try to boot the system from the old hard which still has the old Windows.]
Is it enough information? I can't think of any more. Should I contact an IT guy? Please let me know, and thank you for replying.