5G home internet keeps dropping

Sorry I did not intentionally ignore the reference to the MTU size that Amith Kamur discusses. He is obviously a very intelligent and talented engineer. His article is well written and offers a solution where the use of the VPN is desired. Encountering MTU issues can be possible, and maybe pretty common, as the VPN adds overhead to the solution with the size of the packet. You have to limit the data contained to have the wrapper small enough so every node along the path can handle the MTU. If you stated you use a VPN regularly I would have taken more focus on that but well. As you state, may be unrelated, and I would not rush down that rabbit holeright away. Analysis of packet captures and looking at the physical layer and moving up the stack from the bottom up would be more productive.