Forcing LODs as default for lower settings

[GrillusRetardus]

Say you've got a model and you want to make some LODs. 
You've got your reference model, LOD1, LOD2, LOD3 ,LOD4

LOD4 is just a couple of triangles, meant to be viewed from afar.
While on high settings, this works fine and dandy. But the trouble comes when you go on low model detail. On low settings the "lowest" LOD is used as default and the model doesn't go through any further LODs.

I'm wondering if there's a way of forcing, say LOD3 as default for low settings. keeping LOD4 as just a few triangles, thus somewhat optimizing the level. 
Or should I just set the lowest LOD to something presentable, sacrificing some potential tri reduction?

Edited December 18, 2018 by GrillusRetardus

[Squad]

It would help if you specified the game/engine.

[GrillusRetardus]

18 hours ago, Squad said:

It would help if you specified the game/engine.

This would be for Gmod.