So I coming across this odd visual glitch in the playback preview, whilst using Vegas Pro 13 (Build 545). The issue I'm having is that preview is duplicating an "image" and I can't seem to find out what the cause of the Issue is. Here's a video footage of the issue I'm having: 
I've tried to cross out what exactly is causing it but I can't seem to pin-point the issue. I've tried closing Vegas Pro 13 and opening it again, but the issue is still present. I've also noticed that if I change the preview quality to "Draft", the issue disappears but any other quality setting for the preview, it's present.
Hardware set-up:
CPU: Intel I7-8700K
GPU: Nvidia GeforCe GTX 1080 TI
Windows 10.
Anyone got any ideas what could be causing it and what to do to fix it? And if I need to provide more info, I will.