I just purchased a Roku Express 4K, when the screensaver is on, the unit loses it's connection.
Model: 3940RW
SN: X01600106FAN
Version: 11.0.0 * build 4193-CR
Try turning off "Auto Power Savings": Settings/System/Power/Auto power savings = unchecked
It worked, Thank You!!!!
You're welcome.
Sidenote: Roku made a very poor firmware engineering decision when they decided to include this particular new "Auto power savings" setting/functionality in RokuOS 10.5+ for the new models, and enable it by default - essentially they are configuring devices out of the box to be unstable, incompatible, and problematic, which is the exact wrong experience they want, especially for new users. @RokuDanny-R @RokuKariza-D @RokuMary-F et al