Does the issue only occur when accessing YouTube TV or across other channels installed on your Roku device?
If you haven't tried yet, you can remove the affected channel and then re-install it. To ensure the process is successful, make sure to restart your device before adding the channel back in. We would recommend doing this from the Settings menu by navigating to Settings > System > Power (If you do not see a Power submenu, skip to the next step.) > System restart.
It's possible, I suppose, that YouTube is placing higher demands on your Roku than some other channels.
One thing that could affect this is if you are powering your Roku by plugging into the USB port on the TV. The ports on many televisions only supply 0.5 amp or less, which is not enough to power a Roku reliably. If you were just barely getting by before but have now run into a channel making higher demands on the Roku, it might cause overheating.
If you are powering via the USB connection on your TV, try powering from house power via the USB power adapter that came with the Roku. If you don't have a Roku adapter handy, any other you have from another device should work as long as the fine print on it says it outputs at least 1 amp.
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