Running full screen

So I’m creating my first VR project in Notch and I’m running into an issue. I’m pretty sure it has something to do with the renderer. All I have in my layer is cloner that reacts to music. Pretty consistently in orbit view and in the headset a grid flashes up and covers the whole screen, that reads in minute text “Running fullscreen in PLL or using Spout”. I’ve made other projects in Notch but this is my first time seeing this. Does anyone know why?

Are you using the learner version?
There is a watermark when using full-screen or VR- not sure what that watermark looks like (maybe just the same one as when exporting- #madewithnotch?), but that may be it, or part of this issue.