In a section of the timeline I have two pictures that are supposed to vibrate and shake. I placed the Quake effect on both images and set with the exact same keyframes and effect levels:

1. Start = quake level 0 and frequency 5


2. .15 into clip = quake level 200 and frequency 5


3. 1.15 = quake level 200 and frequency 5


4. 2.15 = quake level 0 and frequency 5

Both are .PNG files.

1 picture has a duration of 30 seconds long and does some movement as it shifts through fading in and out text boxes then arrives at the section with the quake effect.

The other clip starts a second before the quake effect section and is only 15 seconds.

Problem:
Even though the keyframes, the effect chouice, and all of the effect settings are all matching, the shaking effect is not the same.
30 sec - very fast and very hyper level of shaking.
15 sec - sluggish and slow jerking motion.

Request:
How to get the shaking effect to be the same for both pictures.