I shit thee not.
Apparently there's been an update to the game and it supposedly fixes some things in Multiplayer. R* does not have anything on their website about it, but several friends have confirmed they were asked to update when starting the game today. If R* does post something, I will link to it.
I have only found a video from GLITCHED MATRIX mentioning it, but I will not post it since I'm kind of annoyed that he's trying to "help" fix the MP that he himself introduced the RDR Apocalyse mod into, ruining it in the first place.
Please update the game and let us know about your MP experiences.
Here's hoping we have our game back.