Unanswered Bumps. Horizontal layers and nozzle bouncing.

Greetings. I've been trying to print a file in ABS. The issue I'm having is that the ABS is globbing bumps when traveling X. I've changed everything from temps, speeds, extrusion multiplier, Z offset, fan, infill etc.... I can't figure out what's causing the uneven extrusion.
It's doing just fine on circular paths, but as the bumps build up, it causes the nozzle to jump or hop on them. Of course the layers look horrible on the side because of this.

Thanks in advance.

 

I have none of these issues when I print a calibration cube. The cube has a much thinner wall of course, so I have experimented with my layer extrusion width..still no luck.