We have published specs of resolution and positional accuracy here:
https://www.avidcnc.com/pro60120-5-x-10-cnc-router-machine-p-1338.html
Compared to a mill my guess is that most large format gantry routers could be considered “springy”
I’d actually turn this back around and ask you: What are you trying to accomplish with this machine? Asking and answering that might help get you the advice you need from folks that are working with similar machines/materials.