Canon EOS-1D X Mark II DSLR Camera (Body Only) - Manual (Page 220)

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The interval (time) to update the geotag information can be set.
Although updating the geotag information at shorter intervals will record
more accurate geotag information, it will reduce the number of possible
shots because it will drain the battery faster.
1
Check the [GPS] setting.
Check that [ GPS ] is set to [ Mode 1 ]
or [ Mode 2 ].
2
Select [Position update intvl].
3
Set the desired update interval.
Select the desired update interval,
then press <
0 >.
Setting the Positioning Interval
If you are in a location where the GPS acquisition condition is not good,
the number of possible shots will decrease.
The nature of GPS may cause some inconsistency in positioning
intervals.