Severe servo malfunction after upgrade to 1.6.3

1

Is there a known reason why, after upgrade, my servos would have severe chatter, random rotation, and sluggish response? They sound as if they’re being severely strained. Nothing changed other than upgrade of Px4 firmware.

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2

The servos are literally heating up and vibrating. Any help is appreciated.

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3

Switched to APM firmware and the servos are solid. Any idea what’s going on with 1.6.3?

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4

Upgraded firmware via Qgroundcontrol. Lists it as 1.6.3, but after installing it the firmware version is listed as 1.6.1dev. Is Qgroundcontrol not actually installing the stable release?