My machine has: Intel Core i3 M 380 @ 2.53GHz × 4, NVidia GeForce 315M, 3,7 GiB RAM. The system i Ubuntu Pangolin and uses normally 10% CPU and 1,1 GiB RAM. Wurm is using moderate settings and running at +/- 30 fps using 150-200% CPU, 800 MiB RAM. and less than 1KiB/s Network. Normally, that is. but then Wurm repeatedly (with distances of 5-30s) does something and I get a Network burst of anywhere up to 120 KiB followed by a CPU Burst of 400% and Wurm completely stops drawing any frames. for a full second or more. I basically go from 30 fps to 0 fps and back to 30 fps. Now comes the important part: Wurm does the same even when I turn the World Render Off. There is litterally nothing to draw besides the gui, but Wurm can't do it. This is practically shouting classic Multithreading lockup. Rendering is a read only process. there is nothing that needs to be thread save. And it would be nice if that sudden load could be spread more evenly, it's also lugging down the entire System.