Electronic – Altium – How to disable white (polygon?) outlines during interactive routing

altium

I seemed to have pressed some hotkey activating a white outline around same layer objects during interactive routing. See image below. It seems to slow down FPS quite a bit, so I'd like to disable it. Can someone tell me (1) What the white outline means / what it's for (2) How to disable it?

enter image description here

Best Answer

I think @Hearth is correct.

Try Preferences->Interactive Routing->Interactive Routing Options and de-select "Display Clearance Boundaries".