I have been using my tp-link ax3000 for about a year and no problems with streaming channels through my Roku Ultra to my Sony Bravia tv.  But all of a sudden a few days ago Netflix quit working, and on our personal devices it runs super slow and does not load thumbnails.  When I bypass the router and plug the Roku directly into the cable modem it works fine.  The other streaming services are working fine (amazon prime, hulu, etc).  I see an older thread with suggestiosn to turn off NAT boost but the AX3000 does not have that option.  Any suggestions?  What could have changed in the last few days?