Question Fortnite mouse stuttering/lag

[Vorteex]

Someone pls help me with this mouse lag/stuttering
Please someone help me today we have Fortnite Trio Event and i need fast fix pls
This is the clip with the issue:

https://twitter.com/i/web/status/1167747032976625664

View: https://twitter.com/Vorteexgn/status/1167747032976625664

 

[Fix_that_Glitch]

Your fps are all over the place. What is the refresh speed of your monitor?

 

[YT Sweaty Shane]

Mine does the same thing is there any idea how to fix I cap my fps at 144 and my monitor is 144hz so idk why I get it but its so annoying when trying to play comp fortnite.