It is extremely slow to load, have given up trying to use it
speed it up when loading, very slow
It's not just super slow to load but hard to save to the hard disk.
Neil WATCYN PALMER commented
Photos and other video apps on my iPhone launch my 3000 photos/ videos / slow mos selection immediately, RUSH shoes a grey screen which I give up on after 4 minutes -a lifetime of waiting. Syncing with Lightroom does not improve performance. So far a big fail.
Sorry to hear Rush is performing well for you. When you say "slow to load" are you referring to when Rush the app is loading or when you're importing media into your project or something else?
Thanks! Hope we can improve this for you.