Weird glitches in editor interface itself

I have these disturbing noisy textures popping in the interface.

I can’t see the text and it gave me a head ache due to its effect on my eye.

But seeing all these I can’t switch to unity from ue4…I am just fascinated by ue4
Please help me to fix this.

My pc Is 4 years old
My pc spec is i3 4gb …1.6gb is used as vram by integrated graphics