yes, right, it is a shader thingie (4 views of pssm), thanks. without pssm it is at 60 fps, but it cannot go over in fullscreen mode (1366x768). I cannot check it in windowed mode. but I'm cheating a bit, because the last split of pssm is not processed.

later I plan to add placment options for groups of obstacles, but that needs some data in advance, to be handled fine by my pathfinder, and to put correct collider entities...