Why are not some fixtures controllable with the NX4 console?

Each of my fixtures includes an intensity channel of DMX data.

What happens is that some fixtures do not react to receiving DMX data, in other words, a number of fixtures are either not controlled by the console or react to DMX data with a delay.

Another problem is that some fixtures can be controlled individually by the console (with direct dmx cable from console to the fixture), but the same fixture can not be controlled by console when placed in a group of fixtures.

I would start from the basics - patching, cables, network, channel modes, proper fixture personalities in the console and then also if the personality in the console is the same as dmx traits in the fixture. Could be that something changed during onyx update in the fixture library…?
Also look at the delay for programmer changes?