>durr hurr durr eyes don't work in hz or fps
Let me educate you...
Refresh rate is based off of hz. It determines how fast the screen produces an image on the screen. The more hz the faster it goes. Eventually it becomes so fast that the human eye can no longer tell the difference. You reach 250 fps and you can no longer tell the difference past that.
People also have problems with too low of a refresh rate. If you stare at a 20 or 10 hz for too long, you'll get headaches and eye strain.
Get educated m80 before you start talking stuff.
heres a simple test to try out
play at 500fps on your 500hz monitor for a week straight
then go to 250fps on a 250hz monitor
you will see a difference. its easier to notice changes better when you step down, not step up and especially not immediately afterwards. i see these tests all the time. they play at 60fps for 1 minute and then move to 120fps. thats not a real test. your brain didnt get enough time to adapt itself to your 60fps.
250 is a random number for a limit btw. there is no limit. because how our eyes work. also please dont initiate any argument here with me. this fps eye debate stuff is stupid anyway. but ill explain whats on my mind.
because eyes dont work in capturing fps(they dont snap a photo of a frame and send it to your brain), they work in capturing continuous streams of light and moving it immediately to your brain. a monitor doesnt produce a continuous stream of light. it stops every 1/whateverHZth of a second to change to black, then change its frame. even if it changes every 1/1000000000000000th of a second, not a continuous stream of light. your eyes will have no trouble perceiving it and sending it to your brain to decode it no matter how fast these changes happen, because its not continuous. but the question still remains at hand, does your brain even care anymore about how smooth something is going? no it doesnt. because smoothness doesnt make for a better game

if your monitor was continuously producing light, and light that goes faster than light, well then you sir will have some trouble.
as for the 20/10hz thing getting you sick? i can see why. youre staring at a screen that is basically flashing black and bright every 1/10th or 1/20th of a second. your brain will notice these black leaps in between frames at this speed more accurately. even if you yourself dont account for them, your brain will.
bottom line, a monitor cant produce light faster than your eyes can perceive it. if you think it does maybe you oughta build a research paper that says this is possible and become famous