I'd say 7 actually.
DPC has recently announced some of the animations from the upcoming episode will be 60fps, meaning they will take twice as much time to render.
He also implied that in future updates even more animations will be have 60 fps.
That combined with the growing scope of the game with several paths getting content at once, several minigames, extra art for rewards and the time needed to ensure all of that is up to quality means that the time between updates will only grow.
I already made a
post saying more about this, but a simple solution would be increasing the number of PCs.
But I dont expect this to happen, DPC has no rush to complete this game, not when he is pulling more than 50K dollars per month (thats after the patreon fee and his taxes).
So yeah, lets be careful with our health, wouldnt want do die before playing this game to the end lol.