How well does the matching algorithm handle "loops" ?

[MathiasVersichele]

I have a GPS trajectory which looks like this:

So it starts and ends in the north-east, but makes a narrow loop to the south-west

The matching algorithm seems to fail:

Status: success
Time takes 7.052 seconds
Total points 32 matched 0
Map match speed 0 points/s 

I use the following config:
stmatch_config = STMATCHConfig(k_arg=4, r_arg=300, gps_error_arg=100, factor_arg=1.5, vmax_arg=120, reverse_tolerance_arg=0.5)

Can this case be handled by the STMatch algorithm ? Or would I need to somehow "chop up" the trajectory first ?