Little online game stutters

Hi everyone,

I've bought a macbook pro 13 without touch bar in January 2018, mainly for work.

I really love it, byt I've got a little problem when I play http://tagpro-chord.koalabeast.com/ which is a 2D browser game.

Despite constant ping and stable 60 fps, there is a little stutter. I've tried every browser and every little tweak you can do with chrome, I've tried plugged and unplugged, and also on both wifi and ethernet.

I think it is something related either to high sierra or to the gpu. I've tried the game in an apple store on the exact same model and the stutter is there too.

I know this question must be a bit unusual here, but does anyone here have any idea to improve that ? Can we boost the gpu or igpu ? Would it be better with a fix of high sierra (I've read this problem exist for a couple of popular games like dota), would it be better with windows 10 on bootcamp ?

Thank you by advance.