For those experiencing the MudRunner4GBPatched.exe not copying to the game directory by selecting the install path within SpinTiresMod you need to manually copy it from C:\Program Files (x86)\SpintiresMod\Install\Win32\Spintires Mudrunner and paste into the directory. Either the 4GBP or LAA will enable dev tools. But for multiplayer to work I had some people that needed to get a copy of the MudRunner.181119.4GbPatched.exe and paste it into the directory.
it has been always like that, since Spintires added it in tech demo, its not a bug in your game, i rather have that option off because it eats a some gpu process and looks bad + the camera has lag
This much blur only appears on my mods though. You could check it out yourself if you'd like.