after some time testing I came to this stability for skyrim with full STEP 2.2.2. Its all 2K even shadows uGrids=5, and i rarely i mean rarely freez its not even crash, skyrim just freezes, i dunno if its to much OC or its just Skyrim, i dunno it just freezes very rarely lol. Edit: also those drops in FPS are due to riding horse running freely, when fps are stable @ 58 im in a fight most likely. My little example has more than 4000 samples ingame riding freely in skyrim from riften to whiterun, with fights all the way and it did not crash nor freezed. Re Edit: yet another long time play no crashes no freezes. IMHO best skyrim is a Skyrim that doesnt crash, its not about grids, cells or the highest textures available, IMO its about playing it with out problems. Im getting close to a stable Skyrim. Over 6000 samples.