Talk about synchronicity, I've just started playing around with the DX11 fluid solver and hit a bug - if boundaries are turned on, after what seems some random period of time, minutes to hours, it will stop working. The image will wash out from one corner and you then get no fluid. Seems like the velocities have gotten stuck at some value that moves everything off the screen in one iteration. Toggling Init usually restores sanity. @sanch @unc, any ideas where to look? I'm a shader novice but can poke around on it.