How to prevent models from losing detail with distance?

Before GMod 13, I was able to set the model level of detail slider to 1 so that models wouldn’t suddenly lose detail if I moved a few steps back from them, but that slider isn’t anywhere I can see now. Can I still change that setting somehow, possibly in a way that I won’t have to do every time I start the game up?

r_lod 0

Ah, I bet that’s short for render level of detail. Thanks, man.