Here is a comment by Erica Griffin.
So... while #GalaxyNote5 is certainly better at multitasking than the S6, it still sucks in comparison to other devices out there. =(
I often like to run music in the background via the YouTube app and it shuts down after opening a few other apps. My G4 handles it like a champ.
But the interesting thing I am seeing head to head with my #LGG4 is that it does comparable UNTIL I open the Chrome app...that is when everything shuts down.
It's been a process to put my finger on exactly how many apps the Note 5 can deal with. Still running some tests but if you want a great multi-tasking device out of the box, Note 5 is capable but very iffy.