The buff was somewhat noticeable, but still had times where going through several rifts resulted in 0 legendaries.
It is interesting when you see numerous different results that others are having. You have some people receiving absolutely minimal legendaries (like the 100% buff never took place), then you have some people that through the whole day are swimming in legs/sets. Makes you wonder if RNG is truly RNG with this game and there isn't some bad coding going on where a person will inherently have better drop rates throughout the day. Just a head-scratcher as to why there is either feast or famine, never an inbetween it seems. Just my observation...
I am jealous of the people that got set pieces, some even finished out 2 whole sets this weekend (looking at you Teck; fucking hate you). Wish the "RNG" Gods blessed me like that!