To grind I just use three crafting kits and have the macro copy me going through all three kits making advanced droid frames. Then just play it back looped until the resources run out.
Scan the SWG macro forum for critical failures workarounds.
As for the slow macro recording, you will need to turn off your active virus protection, as it is trying to continually scan your new macro file and is lagging your system.
I'm not sure then. You have something on your system that is lagging you down with new files being created. You can try macroing in a room someplace looking at the ground and see if that helps.