I have the same problem with RTH and pan. must be FW.
Whan you said "Three minutes with v56.67 was enough" what did you mean? it was enough to tell that your sensors where bad or good?
Three minutes was sufficient to demonstrate that whatever might have been fixed, previously working functions have been corrupted. This has been my experience so far generally of v.56 over HD55. Additions and improvements at the expense of the basics.
I will add that I am currently only concentrating on the Pan> Tilt> Roll, all 360, Copterworks mount. However, v56.43 did precisely the same things originally on the Pan> Roll> Tilt AV200 mount as the CW mount.
So, some questions for George. May as well post them here so that everyone can see the answers. These are in specific relation to v.HD55 (to which I have once more returned having discovered that even E055 has an issue with the STOP function and the Tilt axis) but apply to all versions.
1. What precisely is the "Process Deadband" option and under what circumstances should it be enabled or disabled?
2. Should "Gyro Calibration On Every Startup" be left enabled or disabled once initial Gyro and Accel calibration has been performed?
3. Tx stick ATV limits under FUNCTIONS all work very well, even including bad boy Pan. But ATV's under SERVOS do essentially nothing at all with 360 servos - although they work well with the AV200 style proportional/external pot. arrangement.
For any who are confused by this: Separate stabilisation ATV's are needed because, for example, if your Tx stick ATV's are set to prevent the propellers or rotor blades coming into top frame, the stabilisation ATV's must also be set to prevent this. Generally speaking I like to set stabilisation ATV's to a slightly greater range than Tx ATV's so that there is still a degree of compensation available at Tx travel limits.
By enlarge, I am finding with the CW P>T>R mount that adding
any Derivative (Acceleration) at all introduces only instability, in the form of servo chattering. At low levels this does not have any particularly physical ill-effects, high levels make the system 'nervous' but I cannot induce oscillation. In neither case is the speed nor responsiveness of the axis changed. Setting Accel and Smooth (Derivative and Integral) at ZERO or 1000 makes no change at all to the speed at which the servos move the camera plate. Tilt and Roll both compensate adequately fast WITHOUT Acceleration and do not suffer any hyper-sensitivity as a result. In fact the attitude compensation is extremely smooth and controlled.
News that File Save/Load is soon coming is very welcome. I hope also that RTH speed can be controlled at some point along with the removal of Startup jerks.
For the time being I am staying with velcro for attaching the 3X. I learned a long time ago with the TRv3's that vast quantities of expensive, difficult to obtain gel and equally overpriced gyro tape will be trashed in the long process of getting to a Happy Place with the constant mounting and removal of the PL box.
UPDATE:
HD55 is back on there and so far is the best of the bunch for the CW gimbal. The Magnetometer is totally useless. Regardless of the gimbal/PL heading at boot-up, the Pan axis just goes around and around when switching out of Manual Pan mode. Hitting RTH with magnetometer engaged sends the gimbal pointing South. But of course it doesn't stop there, it continues circling at a slower speed.
Waiting for a usable combination of the relative stability of HD55 and the extra functionality of v56.