@nhbiker1961-
Three things I can think of on the Roku that might affect this:
"Settings > Network > Bandwidth saver" -- turn this off
"Settings > Theme (may take a while to load) > Screensaver start time" -- choose "Disable screen saver"
If your Roku has a "Settings > System > Power" menu option, go in there and under "Auto power savings" make sure "After 20 minutes of no interaction" is UNchecked.
Roku Community Streaming Expert
I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well.
If this post solves your problem please help others find this answer by clicking "Accept as Solution.".
Streaming Stick 4K+ 3821 | Streaming Stick+ 3810 | TCL Roku TV 43S245/C107X