my mi4c had installed rom from reseller (77.0.44.00) with bloatware. With wifi conection, the donwload speed was 65-95 Mbsp (with router double band in 5Ghz). i flashed mi4c with rom eu 5.10.22. Now, the download speed is 8-10Mbps ¿wtf?. The upload speed is the same in both roms. 28-32Mbps.