Linux CNC Input Pins Error

Yes.

I noticed you want to know a lot of things and i had a reply ready for you, but i thought it might seem a bit to hard.
I will try to explain politely:
-Forget eding cnc, not the same thing, although i am not sure, had to deal with it only once, i did not like it, at all.
-give us more info, always, about everything you have or are trying to use, or whatever,
-settings can not be set to "something that was there", those must be correct and calculated/derived fro the parts in use.
So, more info.... ?

Back to your question, no you do not loose anything by setting step timings at 2000, if the drives are OK with it.
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Cheap drives use cheap optocouplers that mostly do not work reliably with such short step timings, all drives of good quality will work.

Stefan321 wrote:

I'm getting more and more enthusiastic about linux cnc, even if I'm a bit overwhelmed by the possibilities and all the parameters

That's the spirit and/or attitude. Just give it a bit of time and take it in small steps.