[0.1.0-pre1-rc3] Game "flickers" when far from Vortex

[pine elbow]

The grid lines seem to flicker when far from the Vortex (floating-point errors).
Also the screen sometimes turns cyan for a frame.

[noble cove]

does seem like floating point issue https://discord.com/channels/1000343719314198548/1096751406293205032