Display problem and lagging

Hi guys So this is MacBook Pro 15” mid 2014 with intel core i7 and GeForce 750m A while ago I tried to clean it with alcohol while it was running and after that I ran into this problem that display turned out like this I showed it to a few people and they said the screen is fine and gpu is fine and the problem is the processor I was wondering anyone could help me figure this out and how to fix it

and I posted a video on Reddit where is a video of the screen lagging

https://www.reddit.com/r/macbookpro/comments/vu86li/display_issue/?utm_source=share&utm_medium=ios_app&utm_name=iossmf

thanks in advance