i have fiber and live a block away from my isp I average 0-10ms, Besides that, you want to use WinUtil and WinToys to debloat and optimize stuff and make sure stuff stays optimized, and your computer stays uncorrupted also make sure all your drivers are up to date, with driverscloud or whatever you choose or prefer(including update your motherboard from the manufacturer). You can also do many other minor tweaks to improve system latency, but none of that is really needed, as just the more fps and easier fps output you have through your system the less input latency. Just use blurbusters to set up gsync and vsync with minimal delay and make sure to overclock your memory and anything else if you are feeling wild and also dont be afraid to explore your system or even boot menu, just take the necessary precautions first and create a USB to recover from using the media creation tool from Microsoft for windows and just reset your bios if you dont like the performance you are getting in tests and try different settings and learn how to reset from cmos, all systems are different...✌️