Down fps and lags

Hi, I downloaded the new update and I notice that the fps have gone down and the lags and jerks are very noticeable, for everything else it's going well I hope you get graphics like in Survarium or Kholat (another developer) but same engine, you have to make this great game.

I actually had a marked improvement in fps, have considerably less hitching and what lag I have, is due to the fact that my machine only has 8gb of RAM, ATM. I ordered 16 gigs more and know it will pretty much eliminate the lag that I have. My roughest time, for lag, ATM, is when weather effects kick in. More RAM will definitely address that.