2.79b too slow

Recently I move to Blender 2.79b for new features that I needed.

I was used 2.78c for a long time without any issue, however 2.79b is way too slow.

When I run the 2.78c, Blender immediately shown up and I can do everything I want without any delays, however running 2.79b requires some booting time and average UI reaction feels way much slower than before.

I searched about this issue on Google and most common answer is go to nvidia settings and switch some option to different but none of them worked too me.

I really need to use 2.79b, is there a way to make faster? Any advice will very appreciate it.