Yung sineset mo na "1 mbps" actually that's 1 MB/s means 1 Megabytes/s not 1 Megabit/s(1 mbps) kaya sa speed test lumalabas 8mb/s or simply means 8 Megabit/s
8 bit = 1 byte
8 mb(megabits) = 1 MB (Megabytes)
therefore in order to achieved your desired 1 megabit/s sa speed test, you have to set 125KB (KiloBytes) sa netlimiter.