Huge Lag Into Full Minimap Reveal + Stuttering + Lighting Issue

No idea what has been causing this issue but I've gotten it several times now, and I've got screenshots of it twice. Randomly during gameplay I've experienced an almost complete game freeze, and then a couple seconds later my minimap is revealed in a broken incomplete vision, with other distortions and small stutters.

Bug #3,335,837,077 after I finished the Wharf Map image.


Occasionally with the issue is something that looks similar to GPU failure, with rainbow colours exploding out of everything, but this is a strictly POE issue

This is another instance which occurred in the labyrinth which featured the rainbow issue as well as clearly detailing the mini map reveal problem


And, while not the best picture of the rainbow colours, this picture taken in the next room you can see in the spiderweb that there is clearly something wrong

I've had it where a giant rainbow square is vibrating violently across the screen, but the game crashed shortly after and I did not manage to get a screenshot of it.

When I've had the colour problem occur, this will last until a complete restart of the game, the lighting issue even occurs on the login screen.

Hopefully this can be fixed because it is a really awful thing to have happen and I don't know what could be causing it.