I can't imagine this being a problem given that the ATV4 has 2GB of RAM. I just got an Apple TV 4 today and I haven't experienced any refreshing, at least anything I acknowledged while using it. My iPad mini 2 however is awful with refreshing and my iPhone 6 is even pretty bad. So I'm familiar with the issue but maybe I just haven't used the atv4 enough to encounter the issue or I was too busy throwing out "Ooos and aaahs" while using the new tech lol.
I wasn't stating it as a theoretical problem. I was just stating what I've been noticing on mine, and my g/fs. A restart which I just recently did seems to fix it for a few days, I'll post a video before the weekend is over to illustrate what I'm saying.
Like I've mentioned in another thread I found it less useful and more of a requirement to "refresh" an app though. So the function isn't completely useless like I alluded too before, however its more of a solution to a problem that shouldn't exist.
Say for example Hulu, Youtube, or whatever content is added while you are using the app. There is no in app refresh button and unlike the ATV3 merely exiting out of the app and going back in doesn't do anything. So you'll need to close it and reopen it.
I'm hoping Apple or app devs can add a refresh feature because its a bit of a hassle even compared to the ATV3 which was a nuisance its self. Seems like the apps are similar to iOS without the pull down to refresh option. Maybe I'm just missing something?