I have applied the Wiggly Scale Wipe to several different copies of the same text. The copies are identical except for a difference in Fast Blur applied.
1. However this slight difference is what causes AE to re-calculate the text animation preset and thus due to the laws of randomness will almost be different for each instance.
I don't want this.
How can I stop this?
2. I'm not even sure I want AE to animate the preset. Is there any way I can make it so slow that it never changes?
Apply a seedRandom(1,true) before each instance of the wiggle and set the wiggle frequency to 0. Takes care of both your issues.