Should i disable Intel Graphics while running discrete GPU.
iGPU - Intel HD 4600
GPU - MSI GTX 660 2 GB
If not, what are the benefits or issues that might happen?
More aboutdisable intel graphics running discrete gpu
You can if you want to. I leave mine turned off. Most games will go off which port your monitor is plugged into for the gpu so as long as you keep the gpu as the display output you shouldn't have to do anything.
Does that affect performance anyhow? Turning off iGPU surely does keeps CPU cooler and power usage down, as far as i have experienced.
It reduces strain on the cpu yes. I personally would turn it off, because if its not being used why bother.