Integrated graphics dont seem to work following update

Hi, I've been using Zorin for about 10 years with very few issues.
I did a fresh install of 15.2 about 8 months ago, everything fine, ran quickly and glitch free!
Following a recent update its gone very laggy, it seems to have delays in rendering any and all graphics and if I had to guess I would say that the integrated graphics isnt working properly/at all. Any ideas?
Zorin 15.2
Intel G3240,
4GB ram,
128GB SSD.

Hi and welcome to the forum.
If you still have an installations USB for Zorin, you could run a live session to check if the issue is hardware or recently updated OS.