Twitch Rewards: Do Rifle Rivens Drop At A Rate Above like 1%?

[Valkyr-Umbra]

So, for the twitch rewards, I've got my old laptop running a stream 24/7 (with sound on). The rewards thus far have been bad (all credits or fireworks). Does anyone know what the droprate for rivens is, or have a guess? If its around 1%, I'm gunna just give up, no point if I'm just gunna get like 1 or 2 over the course of this promotion. Already got the frames, basically all I care about is the rivens. 

[GnarlsDarkley]

I would guess it's around 1%. Same for Khora and Nidus.

I have 4 streams running and get like 1 to 4 drops per hours so far. 2 Relics, 2 Wisps, 1 Ambulas noggle and 47 times credits

[Valkyr-Umbra]

Oh, I didn't realize you could still do the multiple streams thing, good to know, ty