HELP A BROTHER OUT

i have a problem i'm facing,
i used to play on a laptop with 60Hz and 1280×1024 resolution and honestly i felt good in terms of tracking things or details on the screen when i move in the game. Lately i've been playing on a computer with 240 fps and a 144Hz screen (1920 res)and i can't track shit i feel like it's a bit blurry and i can'y concentrate when i move my mouse and it's very uncomfortable i don't understand why but i feel like there is a problem bcz when i watch pro players and i don't feel the same, i see everything clearly even when they move their mouse very fast.
does anyone know what could be the problem?

maybe screen tearing?

It's because you eyes is so used to 60hz, it was a similar problem which i had where my sens was too fast for 144hz movement so what i did personally was take a break for few days and slowly start to build your muscle memory and i think you should be fine (maybe try also playing on low settings to help u a bit quicker).

the typical 'RICH' problem, ur getting too rich, u wouldnt have that problem if u still plying on ur laptop

change the refresh rate to 60 and see if it's better.

if it is, increase the refresh rate to the next highest setting and check with each one until the problem starts happening again

could be screen tearing, could be the response time being slow leading to blurring, could just be the color / sharpness settings in game and in ur monitor