Roman,
What is the firmware version?
RVT41B6Q
Also, do you have an ASMedia ASM1062 controller to try (often seen on motherboards for additional SATA ports)? That's the one I tested with.
I'm afraid not.
With ASMedia only queued TRIM fails and everything else works fine. So I wonder if 850's queued TRIM issue in 860's case remains only on some SATA controllers.
Looks likely. In that case we will have to extend the existing trim heuristic to match on controller as well.