Odd Printing Result

Picture


Attached is a picture of two cubes that I printed. I noticed since I put my printer into an enclosure it started to have odd cracks and misshapen layers. Anyone have any suggestions? I am using ABS plastic printing at 250 C with a bed temp of 90 C. I am printing on kapton tape and hairspray. The enclosure gets to 50 C max during long prints.

Is the controller in the enclosure too? Maybe the extruder driver gets to hot and runs into overtemp-protection?

Everything is in the enclosure. How could i tell if if its going into overtemp-protection?

I looked up the data sheet and it says the stepper motor can work in conditions around 50C

Here is the data sheet.