Zoom Video Unstable Internet Connection

I have been using Zoom for several months and have had issues with the "unstable connection" errors over the last week or two.  I have reset the modem and my router and still not any better.  Any suggestions on what may be the issue?

I have an Arris Docsis 3.0 modem and Netgeat Router.  
my upstream power is between 43-46 dBmv.  My downstream power is 1.6-3.4 dB depending on the channel with SNR of  38-41 dB.  
thanks for any insight or help.