Just updated yesterday to the most recent firmware, and it's been absolutely terrible since.  Slow, and disconnects regularly. Contacted support, they had me change to a different channel it seemed to be working fine for a little bit but then started all over again.  Attached is the information on my router. Anybody else having this issue and what do we do to fix it? How would I roll back to the previous version? 

Updated to 1.3.5 build 20230932, release 712 11