The last 3 days have been a success. Each day had only 2 shutdowns and they were able to get through all BGs before park close. It looks like Disney is getting close to figuring out how to mitigate everyone's cell phones interfering with the ride and now starting to push the throughput higher and higher.
I am not surprised by a larger number of boarding groups at all. If they were unable to get through all their boarding groups over the last three days, I could see them lowering the number of BGs. Since it was successful, I am going to gamble and say the go for 115 tomorrow; or even higher since they have a buffer of the EEMHs to make sure they get through all the BGs.
Hopefully they can get to 1700/hour before I get there in January.