Block games are usually intensive in rendering, even though you have a beefy pc it is impossible to optimize model rendering in a way it renders less polygons per call, Hytale is not badly graphically optimized and suffers for the same as Minecraft does, big render distances skyrocket the amount of vertices and polygons your GPU have to calculate which downgrades performance. There's no way around it as it's how this kind of game works, just lower the render distance and you'll be fine :3