Make sure you are using the 'high' refresh rate option under global-settings.
Yes, you can set up multiple apps at one:
Now, whenever the app you have selected is in foreground and active, it will automatically switch to 60hz. Although there is a slight 1-2second delay.
Leaving the app (either closed or just in background) will reset it back to 120hz. Locking the phone will do the same and vice versa.
Using Picture-in-picture will also change it back to 120hz but then I guess that is a good thing.
At the moment, there is no option to set 60hz on AOD using this method.
You can test if it's working by enabling the 'fps-counter' under Developer Options.
Yes, you can set up multiple apps at one:
1. Go to Bixby Routine.
2. Click Add Routine present on the bottom.
3. Under (if) condition, select 'app opened' options present under 'events' sub-topic.
4. Once you see a new window, select all the apps you want to use in 60hz mode. (If you are an avid media watcher, selecting them is a good idea) and finally click >> done.
5. Under (then) condition, go to 'display' > 'motion smoothness' > select Standard 60hz > done.
6. Finally, click next on your routine, add any random name you want/customize and done.
Now, whenever the app you have selected is in foreground and active, it will automatically switch to 60hz. Although there is a slight 1-2second delay.
Leaving the app (either closed or just in background) will reset it back to 120hz. Locking the phone will do the same and vice versa.
Using Picture-in-picture will also change it back to 120hz but then I guess that is a good thing.
At the moment, there is no option to set 60hz on AOD using this method.
You can test if it's working by enabling the 'fps-counter' under Developer Options.