So I used to play Counter Strike Global Offensive on my Mac Pro 5,1 and never had any issues. Recently I switched to Intel NUC (NUC7i5BNH) because MacPro was taking a lot of space on my desk and the gaming experience was more or less the same. I am just a noob when it comes to gaming. Mac Pro with Quad-Core Xeon and ATI Radeon RX580 was giving about 150fps but my screen was a 60hz display so none of that mattered. My NUC (with dual core i5 and Intel Iris Plus 640) is giving me a solid 75-85FPS which is fine.
So when i switched to this setup i noticed that maps were not clear as they were before, so i reinstalled video drivers, changed my display’s colors / brigthness etc. Nothing helped. so i tried changing some in-game video settings. But in vain.
So i came across this in the Steam Community forum
There seems to be an issue with the Intel HD Graphics 530, 630, 640 and others.
program files (x86) > steam > userdata > your number > 730 > local > cfg
Add the following to the bottom of the file
Set the file to READ ONLY, so that Steam doesn’t overwrite it