There is a note factor to take into note...

How many people are using INTEL based machines vs AMD?

ahhhh i stand corrected thank you sir, let me fix it

so i'm seeing a pattern here, below are some pictures of your typical serato dj 1.3 users

serato dj 1.3 users on mac's
upload.wikimedia.org
leostartsup.com

& serato dj 1.3 users on windows pc's with AMD processors
weinterrupt.com
www.decibelmagazine.com

this seems to be the general consensus with the new update,WORKS GREAT FOR ME!!!! on a mac of course

I'm noticing this A LOT from the reports that have been coming in; and that many of them are using AMD processors.

This would make sense especially since Serato did publicly state not using them.

This is most likely some kind of software/driver issue with the platform and won't be easily fixed.