Could you just confirm that mode 3 was selected? Should appear something like this in the beginning of output:
miniZ<150,5,3>[3:1:00:3933]: Selecting GPU#0[0] P104-100
yup
GPU Bus load, reported by GPU-Z, also varies from 7 to 16%, with worst performing GPUs using less bus bandwidth.
we just released a v1.5q3 beta version.
Thanks.