Tomseas Are you dynameshing at a resolution of 512?? It doesn't look like the object has taken the 512 resolution mate. Looking at your active points it doesn't seem high enough from the pictures. I mean from what I see from the 3rd picture is your activepoints are 13,372. You should be in the region of XXX,XXX…
I did both 512 and 1024 and was still at a very low poly count. Base count for the cube would be 8 anyway, and maybe the size makes it so it doesn't reach into the 6 digits. I tried scaling up and down with similar results.