Reseting Autocad 2015 only helped improve the speed sligthly.

Does the reset remove the service packs? I know you can individualy uninstall them on a pc, does mac have the same option?

Thankfully I was able to acces an Autocad 2013 for Mac. On that version I have no problems and the speed drasticly improved. 10 to 20 seconds for one pdf, compared to the 1 to 2 minutes for one pdf on the 2015 version.