I have an integrated Intel hd 520 card, and in low/med settings it can run the beta game very well 30/37 fps all in low, 25/30 with some things in the middle, but maybe your card is older try to update its driver od video card.
I’m not saying he’s done anything wrong to U4, I’m just referencing the multiple times he’s done weird things with U3 that did weird stuff to the game. For example, the one bug that lasted for a while where you weren’t able to pick up some items.
As the gameplay of Unturned II is not as frantic even online most of the time, and Nelson is working hard on code and optimizations, I am sure that even in the final version with structures, cities and farms we will have a great performance.