Why Android Studio is slowing down when editing xml file or changing the design?

Question

I have a Hp envy notebook with Intel i7 and 8gb ram and 2gb graphics, still sometimes android studio stucks when I am working with xml or design the app. Is there any problem w

Answer 1

-Xms256m -Xmx1280m -XX:MaxPermSize=350m -XX:ReservedCodeCacheSize=225m

My studio64.exe.vmoptions file, add some heap wish to have some help.

BTW, most cost is at the CPU and memory. Graphics Card is none of business.