Electro magnetic interference

so , I was having some pretty serious interference issues, at first i had all my cables together and everything was close to the machine. it kept doing odd things like losing zero point, moving erratically, not firing, and sometimes it would work fine… i have since separated everything and moved the laptop as far away as i could with the cable provided. that has helped a lot. however it still seems glitchy. it looks like the solder blob (a fix for noise) has been put on at the factory.
I’ve read somewhere on here about a better usb cable with more choke is available somewere. is that what i need? if so, where do i get it?