Maybe because of MRCD polarization is different from Gatso one.
For Gatso for sure vertical is better.
If you have MRCD and Gatso in your country you have to choose.
Or trying in 45 degrees as you've said...
We do not have K band radar in The Netherlands.
Gatso and MRCT. Gatso falses on KIA and MRCT on USA made Fords only.
Genevo usually quick on fixing the falses with the updates.
Gatso has beter detection when turning 1M 90 degrees.