FlightFeeder vs USB FlightAware Dongle

[rugomol]

Excessive filtering reduces the number of aircrafts

Dump1090 mutability 1.14 or 1.15dev performance?

Past weekend I reinstalled my RaspberryPi ADS-B receiver. After installing dump1090 mutability 1.14 and some testing I upgraded to dump1090 mutability 1.15dev I had the impression that the number of aircraft shown in the web interface of dump1090 was a little bit less than running the 1.14 version. A real side-by-side comparison is very difficult due to the lack of a complete 2nd and comparable setup. What is your experience with the performance of the 2 versions?