I've been experiencing muddy and pixelated textures/resolution since update Rev. 0.30.113860.
A workaround can be completed by accessing the menu>configure>video = which will then refresh the settings and bring everything back to normal. Please see attached images.
This bug affects all scenes in-game and main menu, until the workaround is completed. Simply waiting will not fix the issue, nor does joining servers. {F29311}