You can make brush animations loop continuously using the loop feature. Looping adjusts the speed of the turbulence and flow so that particles at the beginning of the loop are at the same spot as the particles at the end of the loop at the same time. The result is a smooth loop without any jumping as the animation repeats.

To loop brush animations

1. Select Paint Effects > Brush Animation > Loop Brush Animation > . The Brush Animation Looping Options window opens. For descriptions of these options, see Paint Effects > Brush Animation > Loop Brush Animation.
2. Beside Cycle Frames, set how many frames you want to loop through the brush animation.
3. If the brush has turbulence, set the Turbulence SpeedMult value to increase the turbulence speed.

   Similarly, if the brush has flow animation, set the Flow SpeedMult value to make the flow faster.

   In general, if you need to increase both these speeds (make the values greater than 1), the loop can be made smaller.

4. Click Loop.
5. In the scene view, click the Play Forward button to check that effect is as you want it.