HI @John_Vogelaar ----- Thank you for touching base with me, I am glad the work around has returned stability to your setup.
In regard to your question of obtaining another router/Wifi APs, I would recommend the advice given by our CTO in the link shared above, in my previous post.
“A Wifi mesh network with multiple base stations from the same manufacturer working in concert, will always yield a strong result when it comes to home Wifi connectivity. However, a single 802.11ac router with a good reputation should do the trick as well.”
Companies like EERO and ORBI are fairly popular but there are of course other options as well (The 8 Best Mesh Wi-Fi Network Systems to Buy in 2017, all depending on your needs and budget of course.
All the best to you and your loved ones in 2018!
-Eric