MIO168 DLOG has glitch when AC analysis enabled

[fietser28]

When AC analysis is enabled and I log DLOG values from the MIO168 there will be a glitch in the recording between 50-70 ms after the start of the recording.

DLOG settings:

Will usually result in a glitch just before or after 60ms:

Turning off AC analysis makes the glitch disappear. I only see the glitch 1 time in a recording.
The sample frequency doesn't seem to make a difference.