I run 5ghz with ISP router and 600mbps and 0 problems so far with
internet. The other important part is your "gaming pc" as it needs some
minimum specs to run properly
Lowering settings will get you perfect performance at 72HZ. I tried 1650
non TI and it ran pretty well at low and recomended res. Not the best
experience IMO but it's better than not playing i think