Flickering Glitch When Moving Fast

I’ m making a space game set on a moon, and it turns out moons are pretty big, so your spaceship needs to move really fast in order to get anywhere. The problem I’m encountering, is that when you start moving fast, the spaceship seems to intermittently flicker and blur, and the lighting on the moon goes dark all of a sudden. As soon as you slow down or stop, everything goes back to normal, but as soon as you start moving again, everything’s messed up.

The only lighting in the scene is coming from a single Distant Light, and a Sky Light, with an outer space HDRI.

Here’s a video of what I’m dealing with:

Any tips or advice would be very much appreciated! This isn’t quite at the level of “game-breaking bug” for me, but it’s at the level where my game is going to look like crap if I can’t get it sorted out!