Unreal get stuck every N sec/min

Hi all, I’ve just started using unreal engine and I’m facing this problem, it’s annoying trying to work like that.

so the issue is … I don’t have to do anything… it just get stuck for a few seconds in the editor mode… so far mi scene has: BP_Avatar (Player), Cube, DirectionalLight, Landscape, LandscapeGizmoActiveActor, P_Fire(Particle of fire), Rock (fbx that I’ve downloaded free from somewhere over the internet…)

I’ve moved the Scalability Settings to high (auto) , and these are the aspects of my laptop:

RAM: 12 GB
Intel Core i7
Nvidia GEFORCE GTX 860M

Please let me know if I’m missing some kind of configuration or if the aspects of my lap are not enough…

Thanks in advanced.

Regards.