For those who have a weak computer - performance improvement

Friends, the changes here are only for those who have a computer that is not powerful and the speed of the frame rate (image display) is very slow and makes it difficult for you to work
There is no obligation to do these things - each of them affects our graphics a little differently and hurts it a little but gives us a higher engine speed
So only if it really makes a significant difference for you and helps you in your studies, do it!
Otherwise you can skip