i reached acendant a month ago from laptop after getting motivation from my earlier post where some people mentioned they reach immortal from a laptop but now i'm ascendant stuck...(i was plat then)
honestly listen man i have all the experience, i play on a very shitty laptop with 5-30 fps with lags and shit and i reached diamond 3 which was very hard (the screen didn't affect me just the bad laptop)
then i started going to internet cafes and i started to get an insane winrate 70% mostly mvp or second but that wasn't bcz of the screen i actually made the display 1280×720 just bcz i didn't get used to the big screen
anyway the part that is the most important is for a week i stayed at my brother's house one time and he has a good laptop that run the game on 240 fps 1080p but the screen was the same size as my laptop and i didn't feel a bit different from the internet cafe heck i even felt more comfortable playing on the laptop and during my week there i still got the same results as the internet cafe
conclusion: thr screen size doesn't matter that much if ur getting a smooth game
refresh rate matters but at the very least it's not the reason ur stuck at ascendant believe me man
now if u were imm3 and came with the same problem then sure i would tell u getting a bigger screen with a better refresh rate would help
bur not in ascendant