Media Encoder 14.3 crashes during exporting

Hi, I've been having trouble since Version 14.0 with Media Encoder crashing when I export videos from Premier Pro. It will export about 60-70% before it stops and then shortly therafter system crash.

Further, when it does not crash the exported video glitches as in the speed of the video. So a person would look like they are blinking over and over or their hands are shaking etc. 

Please help!