It's all over the map. On my PC everything is fine but this happens when I load savegames on my laptop.
Can I fix it somehow?
It seems to me, though I'm not sure, that some meshes (=3D shape of an object) are screwed up. It looks like an object (item, tower, rock, etc) is streched out from one point. You can probably find which object it is by following the weird strech to the point where it begins.
Have you tried a re-install? That'll probably fix it. Also, try (in your mod manager) to turn of all the mods and see if it happens then (make sure you don't save with the mods off, or all mod-related content may be gone or screwed up if you continue playing with them abled again).
It could be game-related, but it is more likely driver-related or even hardware-related.
Try different driver versions (latest first), and perhaps try running some benchmarking software - this will tax your gfx hardware, possibly giving a indication of a hardware problem. This could be a sign of impending hardware failure or a sign of over-heating - not a surprise with laptops.