From my understanding the drop-rate was the same on normal, as it was from torment... just heard someone say that the drop rate is increased if you are on torment1+...I apologize if this is already on the forums. i did a search and couldn't find anything on this. please enlighten me
The drop rate of every legendary item from caches is increased from Torment 2 onwards. I don't have percentages but it's been confirmed by Blizzard that you will have more chances to get an orange if you are playing on higher Torment difficulties, the point is if you can kill stuff fast enough compared to easier difficulties.
T2+ have higher legendary drop rates from caches, but there are contradictory blue posts when it comes to actual cache-only legendary drops. There was a thread about it recently, can't find it right now, but also check out the numerous samples of "normal vs. T2 caches" that people have done (there was one guy who farmed 140 caches on both and found *more* legendaries in the normal caches).
I would not run anything but normal if you really just want a RoRG. However, I only run T6 these days because if you find a goblin along the way you got a chance for the goblin rift and on T6 it's just much more gold. Plus, higher chance for the Keywarden drop and on Torment you have a chance for Ramaladni's Gift. Small incentives, but at least some incentives to stay away from Normal.
That being said, if you're not completely outgearing content and Torment (especially T6) isn't super easy for you, and you just want the RoRG and/or rift key fragments, then I'd highly recommend to run Normal bounties.
I would not run anything but normal if you really just want a RoRG. However, I only run T6 these days because if you find a goblin along the way you got a chance for the goblin rift and on T6 it's just much more gold. Plus, higher chance for the Keywarden drop and on Torment you have a chance for Ramaladni's Gift. Small incentives, but at least some incentives to stay away from Normal.
That being said, if you're not completely outgearing content and Torment (especially T6) isn't super easy for you, and you just want the RoRG and/or rift key fragments, then I'd highly recommend to run Normal bounties.