I've recently started accepting bitizens with a rating of 8 now to fill my stores until I find a dream job, as 9's are quite hard to come by. I'm just wondering the time difference % wise how much faster each bitizen is from ratings 1 through 9. I'm wondering this because sometimes I find it really hard to fill up my store but 6's and 7's are VERY common. So the real question is, is it worth it to get and 8/9 or settle with a 6/7 while waiting for a dream job to come along.
This information is very important for me as I also need to calculate whether it's worth it to say have a dream job as a low rating of say 2/3 or have a normal worker of 8/9 as maybe even with the x2 stock it's not worth it as say bitizen can stock more than twice as fast with an 8/9.