I got a free Samsung Tab4 when I got my S6 Active 2 years ago. There is next to zero lag when I use the phone but the tablet is unusable, like 10 seconds lag time. I closed everything but DJI Go and it made no difference. Am I missing something or is this tablet just not up to the task?
Another couple of things that may help, from the DJI forum in summer 2015, probably talking about a P3. The android part is still mostly valid, just substitute "DJI Go 4" for "DJI Pilot":
1: Reset you tablet to factory default, after is is updated with lastest Lolipop Firmware.
2: Install Zapper Task Killer
3: Select all selectable processes using Zapper, and Kill All.
4: Install DJI Pilot From Dji Download section on the website(Make sure you allow installation of softwares from unknown sources).
5: Go in Apps option and manually select all apps, and disable notifications for every single app you can do so.
6: Go in App Store and disable automatic updating of all apps, by clicking the 3 dots on the top corner.
7: Go in developer options of your tablet and set "Logger buffer sizes" to 256K(Not sure if it's important but seams to have helped for me).
8: Reopen Zapper again and Kill all processes again
9: Kill all processes again using Zapper(Yes why not twice
!)
10: Open Dji Pilot and login to your account
11: Plug your remote, and then turn it on
12: Turn on you Phantom 3
14: Enjoy Lag Free flights...
I was having constant Lags every 3 seconds, on my Nexus 7 2013, did this in this order, and now i'm lag free, tested full 20 min flight. Also i advise you set ALL animation options in the Developer options to OFF ! To increase performance even better...