I wanted to explain an issue I had and how I fixed it, if it crops up for anyone. Might be most prevalant in earlier versions of 6.0 (mine is 6.0.23). I only saw it on my WebGL builds, win64 was okay except for my GPU fans trying to take flight!
It’s where you get random white circular flashes occasionally (most likely with specific objects). It could well be bloom.
To find out, go into the render pipeline settings to the bloom settings, and set the bloom colour to red or some colour you’ll see well. If it changes the colour of the flash, it’s bloom. Record your screen because it’s useful to look at the flash, because there will be a small black shape at the centre of it. That’s where the problem is exactly.
It’s most likely some problem with the mesh construction that causes the bloom filter to go nuts! Just fix the problem, for me it was down to doing some face removal with probuilder. I fixed it by collapsing some vertices that I hadn’t joined.
Don’t forget to set the bloom back to white!