Have you looked into Imposter lods?
They were originally created by unreal engine devs for use in fortnite
As you can see by Ryan Brucks
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And a nice demo video here
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here links to the latest maintained version
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I personally use these where ever i can as there just simply better then the traditional lods
If your looking to squeeze as much performance as you can out of the the game then this is something you will want to look at
Its suggested to be best used for foliage but i use it on rocks and mountain meshes and buildings and monument meshes
Baking imposter lods is also very simple and automatable too so its not even like you have to go much out of your wat to test them out
In the first video i linked shows how quickly you can make a imposter lod
I also recommend checking out this
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method to save extra drawcalls in materials i use this for everything i do, i personally think it should be the new standard