I have two AMD 6000 series rigs and have switched over to 1.56 late yesterday on crazypool. I'll let it go a few days and then run a comparison on pool side stats for shares.

With same settings as TRM power consumption is a bit higher. For example, one rig went from 570w to 592w moving over to TBM. Software figures there but power at the wall seems to back it up increasing an additional 30w over TRM. With additional tinkering it MAY be possible to pull that back down however I'm not going to spend time trying until the initial test is over and I can compare the pool side shares over a few days at least.