Delay in switching tabs that has 250 list items

I have a tab that the content contains a list with approximately 270 items and every time i switch to this “tab” there is a good 2-3 delay before anything is showing, can this be sped up? this is not limited to tabs itself this even happens if i have the items in segments, it seems to be a redraw issue on the phone (using a s4)

Do you use VirtualScroll?

I was not, i switched to virtualscrolling and the result speed is faster however my virtualscrollis all out of wack, will post a separate thread on this