Game is laggy when caves are enabled

Its problay about your CPU i have the same problem but fixed a few days ago. 

Go to game starting options on steam and type this -tick 60 it will remove your lag (almost) 

But your character texture may twitching when moving. its worth to try

My CPU is a Ryzen 3700X
I used to have an I5 4670k, and this problem wasn't happening back then.
That "twitching" was, in fact, the lag I was referring to. I should've phrased it that way.  
I tried different tick rate settings (15,30,60, default). The problem is still present with all of them.