Thanks so much for the reply and assistance.
I have this hub - Plugable 7-Port USB 3.0 SuperSpeed Hub
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
I have 5 of these adapters - Plugable USB 3.0 to HDMI 4K UHD
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
All 5 adapters are connected to the hub. All other monitors working fine at 60hz and maintain position in windows 10 display properties when manipulated.
Thank you!