get a non hdmi 2.1 receiver. I have a Denon s750H after returning the TSR-700 and don't have any HDMI switching problems. The s950H would work too.
www.denon.com
AVR-S750H-R
7.2 Channel 75W AV Receiver Dolby Atmos, DTS:X, DTS Virtual:X, Dolby Atmos Height Virtualization 6 HDMI inputs, 1 HDMI outputs, including eARC HDMI, Audyssey MultEQ, Dynamic Volume/EQ, Voice control with Amazon Alexa, Siri (via AirPlay 2) and Google Assistant, AirPlay 2 / Bluetooth / Network...