RBR750/RBS750 Hardwire issue with Firmware Version 4.6.9.11?

I think I found the cause of the problem. I recently made some changes to my onedrive account and , as a result, had about 100 gigs of uploads from my desktop (My desktop is connected via Wifi). During the uploads the Poly phone would have the issues (the phone is hard wired). I've uploaded and downloaded a lot in the past and never had this issue - I have 150/150 fiber internet. 

Wondering if the new firmware made a change affecting the QoS? I've tested this now a bunch of times and it seems to be the issue.

I have not yet downgraded the firmware to confirm that the firmware is the cause, but I am fairly certain that the phone would have quality issues/ loose connectivity ONLY when I was uploading a lot of data from my desktop.

Other routers have QoS settings that prioritize VoiP phones. I do have port forwarding and a port reservation set up on the routers that shows it as a voip phone already.

Thanks in advance.