@pranalipatel - thanks for the info here!
I think @jesse_peng saying "set people only see the media them uploaded " - is an important issue. Not sure if other members of our buddypress can see each other's media or not - this should be tested - or if other site admins can see other users media (this is something that should be settings changeable from the super-admin) - I ended up using a plugin "press permit core" to remedy that problem some time ago - not sure if it's still an issue - but I'd LOVE to have an option to turn off the admin seeing all the other users uploads in the 'view media library' page in the admin dashboard.
I'd also LOVE for the comments on other user's media to NOT show up in the main dashboard page - it clutters up the admin dashboard and makes it so I might miss other important comments. We should be able to turn that off / filter them out.
The ability to turn off seeing other media on the library page would also help with crashing the web browser - I have mentioned this recently on make wordpress pages ( https://make.wordpress.org/core/2016/09/23/media-weekly-update-sept-22/ ) and on the trac via ticket ( https://core.trac.wordpress.org/ticket/30401#comment:5 ) as suggested by one of those working on media handling updates for wordpress core.
Hopefully better UX is in the future with wordpress and rtmedia handling images for admins.