The only verion of FW that users had issues w was only v1.10. Seems the new version has corrected the problem. My 890 has been working great since day one. Solid and stable amd great wifi range and handling of many devices w Smart Connect enabled.
Not impressed Linksys FW development and update cycle. They leave to many bugs open and never close them be going to another Rev model. Leqving bugs on current and older models. Not good. Thank god for 3rd party fw.
Good luck.