I found that those clip-on ferrite clamp filters are pretty good at dealing with some of the noise spikes you get in installations like these. With switched mode power supplies, VFDs and stepper / servo drivers all doing their little thing, there are lots of noise sources thrashing away. Just a few of those spikes getting in to the step / direction etc lines can cause lost or gained steps or gradual creep of the table.

You can get them from ebay, CPC etc for peanuts and they are very simple to fit, without needing to disconnect anything. The actual specs probably aren't massively important as long as they actually fit over your cables(!). Worth having a few handy or even just a good idea to fit some by default.

I got some of these randomly chosen Chinesium Mystery Brand filters that work out about a quid a pop for the 9mm version. Other brands are available.....
https://www.ebay.co.uk/itm/402221769539