[Trevally.]

Ok in your options you will find this :-

# the TC level at which the TCx on contact distance is enabled (this will change the TC level to a pre-determined level when a contact gets inside a specified radius around the sub if the current TC level is greater than or equal to this value)
# below in powers of 2 only!
TCxOnContactDistanceEnabledTCLevel = 1024

# when at TC > 1 and TCxOnContactDistanceEnabled is enabled (True) then this is the radius around your sub to determine when to set TC level to TCxOnContactDistanceTCLevel
# below in meters
TCxOnContactDistanceRadius = 8000.0

# the TC level to set when TCxOnContactDistanceEnabled is enabled (True) and contact is inside the TCxOnContactDistanceRadius
# below in powers of 2 only!
TCxOnContactDistanceTCLevel = 1

Change the 1024 to 32
You can also increase the range (radius)

If you do this however - you will only every be able to increase TC to 16 without it dropping to 1 when any contact is within that radius.