Photo on 06-07-2016 at 13.01.jpg

When having this selected and not having Change Resolution Mode selected, I keep having this white box appear.
It isn't based on any of my objects and overlaps anything even hud items if I try and cover it up.
I have found the issue goes away when I minimise the screen or re-tick Change Resolution Mode but this results in my game being too small on screen.

If I use a different graphic engine from Direct X9 to Standard, the issue remains.

The same error occurs when using Ultimate Fullscreen.

Please help

Can I fix this?