We have a bug with the selection code. It creates huge slowdowns playing animations. Here is how to replicate:

• 5.2.0-RC3. Mac. Local server.

• can.exo. All vars on. Apply.

• Play. This is how fast can.exo should play.

• Leave at last timestep.

• Find Data. Cells from can.ex2. EQPS >= 1.5. Run Selection Query.

• Play. Notice how slow can.exo plays.

• Reset Session.

• can.exo. All vars on. Apply.

• Play. Notice how can has slowed down! This slowdown is universal to all animation - it also now shows up when animating a sphere Start Theta!

• I also believe that every time you add another seleciton query , ParaView slows down even more. For instance, Find Data. Global ID is max. Run Selection Query. Play

• Again, Find Data. Global ID is min. Run Selection Query. Play.

It slows down more and more for each Selection Query.

The only cure is to close and restart ParaView.