In the latest version of PLAT has anyone else had issue when on the mixer page, using the slider to scroll back and forth looking at your tracks, while moving the scroll bar, as the tracks go by they are wavy like the screen is scrambling briefly?  I have never noticed this before in any previous version and wanted to know if anyone else has experienced this.

I cant say I have noticed this.
Have you made sure your graphics card has its latest update ?

Also make sure the Pause/break button is not enabled.
 
" If the Now Time does not update smoothly during playback, press the PAUSE (or BREAK) key on your keyboard to make sure you didn't inadvertently put SONAR in CPU conservation mode. If the PAUSE key has been pressed, SONAR displays the letter P in the status bar.
If the Now Marker scrolls out of view or off of the screen, press the SCROLL LOCK button on your keyboard so that SONAR follows the Now Marker."