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Phoenix has many tools for changing the animation timing of a cache sequence after it is simulated. The Input rollout has a variety of animation controls in the Time Bend rolloutsection where you can change the speed of the animation, loop, or directly animate the cache index for each timeline frame. When using these controls, Phoenix FD often needs to internally blend between two cache files to produce a given frame on the timeline. The Time Bend Controls blend frames cache files on the go, at the moment when a new frame is loaded on the timeline - either while you're previewing the simulation in the viewport, or when rendering. For fire/smoke simulations, if you don't want this slowdown, you can bake a new sequence of re-timed caches using Time Bend Resimulation, as described below.

For liquids, simply changing the Input rollout Time Bend controls is enough to re-time a simulation.

For fire/smoke, you can first try changing the Time Bend controls using the fast 'Interpolate' Frame Blend method, or if you have Velocity and Advection Origin grid channels saved in the cache files, you can get much better looking results using the Precise Tracing Frame Blend method. However, if you do have fire in the setup, it might flicker after re-timing using the Time Bend controls. If you see any flickering/jittering/ghosting effects, you can run a Time Bend Resimulation to get smoother playback. The procedure is as follows:

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