<4096-4294967295> Number of bytes to process per sec
I usually leave these at default. For most part it works fine, but I have hit the max number of session limit sometimes when I download all the YANG files. When the client closes a session, it takes a bit of time before the XR considers it "returned", so even if you have a single client that serially and rapidly establishes new sessions, you may run out.
Are there any other “crucial” things to consider in order to enable netconf / yang?
You are likely to encounter things here and there that do not yet work as expected. Be sure to report such findings back to the XR team (or to me) to make sure it's fixed asap.