No, that's not entirely correct.
But it might depend on the content providers, who are the ones that design the app for their service on Roku.
I'm currently using (1) Roku Express 4K+ 3941R (2021), (2) Roku Streaming Stick 3800R (2017), and (2) Roku Streaming Stick 3600R (2016) devices.
I use several of the major channels/apps, including Philo, Peacock, Paramount+, Hulu (On Demand), Disney+, and they all show the frames when I FF or RW. I have read that the Frndly app/channel does NOT.
Which app/channel are you talking about?
