iOS issue with wifi and smartlink

I have been trying to use my iPhone from the office with our Spectrum internet service.  I have two separate Spectrum services in my building.  They are both 100 down / 10 up.  On one I have a google mesh network setup that covers the whole building.  The second one is installed in my office with a Netgear router.  I am the only one who has access to the 2nd wifi service so no other devices are connected to the router except iOS SSDR on my iPhone X.

On both wifi's, I can open SSDR iOS and it runs great for about 5 minutes.  No stutter and runs just like I am at home.  After 4-5 minutes, the software just freezes.  Panadapter, waterfall, audio, etc just stop.  If I hit the Disc button, I will disconnect and then I can reconnect and I am good for another 5 minutes and the same thing will occur after 4-5 minutes.  Everything just freezes and the audio stops.  If I turn off the wifi on my phone and run off cell data, all is good.  I can run all day on cell data.  I also have no issues at home via the wifi (not using Smartlink).  Any ideas on what would cause the software to just stop like this?  I'd rather not use my cell data when I have good wifi here at the office.

If I bring my laptop to the office, I can run all day running SSDR for windows on each of the Spectrum wifi services. 

K4QXX