IT appears after updating my 4800rw to (9.4.1) Build 4212-c2, HDR will not work unless I reboot the system or go into HDR always on and turn it off then back on. Everything was working fine until this update.
We pay a lot money for these units, so lets get them fixed. And please read every ones complaints before responding with (did we do this, did we do that.) Stop trying to blame it on the user or the TV Brand. GET IT FIXED!!!!
Report this directly to Roku:
Chat or email: https://support.roku.com/contactus/contact-options (choose setup/ultra/other/need more help)
and/or message @RokuDanny-R
(if you want more specific user-provided help here, you'll need to provide more info: brand/model of TV, brand/model of AVR, how your Roku is connected, etc)