@edcyn, If you are still experiencing Hi-Res Streaming issues, you might need to call your ISP for assistance. If needed, you might ask the ISP Customer Support person to check the cable signal strength coming into your modem to help troubleshoot the issue.
I also upgraded my ISP cable speed from 100Mbps to 250Mbps and have had no problems with QoBuz Streaming. I cannot prove this, but I wonder if your Router has issues handling the streaming speed used by QoBuz. For example, I had a router that was dropping packets and the vendor was working on it with no current solution.
Successful QoBuz H-Res Streaming REQUIRES all your devices that connect to the Internet to be working perfectly. This includes the router, switch boxes, modems and the ISP connection (junction boxes, amplifiers, etc.). For example, my ISP switch box connection on the street was corroded and needed replacement.
It seems, unfortunately, I have had issues with most everything down stream.