Issues with desktops

Hey everyone,

https://reddit.com/link/ktf2ea/video/yb4vwzyf47a61/player

My MBP has been doing some weird stuff with my desktops for a little while now. I am in Big Sur 11.1 and I've noticed my screen flashes black upon start-up and then often flashes pink when I Cmnd+Q a window and it automatically transitions back to the home screen. This is just occasional, but now I'm having a more persistent issue where my desktops are experiencing severe lag and some form of partial blacking/whiting out? I have tried to show it in the above screen recording.

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Basically, when loading my first desktop it loads the old wallpaper I had on it, and when swiping to Desktop 2 it keeps the background from Desktop 1 for a second or so. At the end of the recording, you can also see my screen starts rendering random white chunks across it. I feel like this is probably more concerning? These are all Apple's native wallpapers, so I wouldn't imagine there is an issue with the wallpapers themselves. Spotify also appears as a solid grey screen in the preview when I swipe up and takes a few seconds to appear when I open it - I do not remember any of this happening back in Catalina. I know it's obviously not the end of the world, but as I'm sure many are familiar; Apple usually functions so seamlessly that when things like this happen it sticks out like a sore thumb and becomes quite irritating.

If anyone could please give some insight as to what is going on and how I might be able to go about fixing it, it would be much appreciated!

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I am using;

MacBook Pro (15-inch, 2018)

2.9GHz 6-Core Intel Core i9

32GB 2400 MHz DDR4

Intel UHD Graphics 630 1536 MB

In the recording, my battery is @ ~70% and I only have Safari, Chrome, Spotify, and QuickTime open. I had also restarted my Mac just before this recording (after already having the same issues before restart).