Version 4.3 Major Issues

Hi all,

Just started my system up and it asked me if I wanted to upgrade to the latest version 4.3 from the version I had 4.2.5

All good however....

Whenever I load a track on the next channel on my DDJ-SR (I only use 2 channels).  The program stutters and jumps like crazy.  This is no good at all.  I cannot use the program.

How do I roll back to the previous version as that worked perfectly.. help pleaseeeeeeeeeeeeeeeee