Yes I am strongly considering trying a different bottom bracket.
I was not sure at first. After our vacation tour I brought the bike to LBS and they tightened the bracket. It stayed ok for day trips, mostly on unloaded bike. However we just did 700 miles of the Empire State Trail and the bracket started acting up on day 8 and being annoying on day 10 (lost chain 3 times)
So the bike is back in the shop amd…we’ll see
What type does your Rohloff tandem have and who makes it.