Grey Streaks across the screen

Whenever I am playing rust, there are grey streaks that come across the screen, that look like they are coming from the sky or something. They are all sorts of different shades of grey and they sometimes take up my whole screen. (I would add a picture, but I’m not sure how xD) I’m not sure why it is doing it, it wasn’t doing it when i first got the game.
The random streaks happen in the webplayer and on steam.
Is anyone else having this problem? And does anyone know how to fix it?

Steam Client With AMD Graphics Cards [Troubleshoot]
http://forum.facepunch.com/showthread.php?t=1319963

Help fix this bug (on steam)
http://forum.facepunch.com/showthread.php?t=1320082