It's time to stop TS,
Kahit anong APN gagana sa globe, kahit ilagay mo pa 'kingrobert' as your APN gagana.
kahit MGC at DEFAULT APN gagana.
same lang din naman, IP hunt pa din ang kababagsakan mo at isa pa di dedepende dyan ung speed ng net it's never a factor unless gagamit ka ng proxy associated with it.
try mo, paload ka at mag speedtest using many APN variations no proxy btw. Same lang sya.
suggestion ko lang sa inyo, test your own username as your APN at hanapin ang tamang IP and speedtest ka ng 3 times for consistency (cdc ka every speedtest). of course may margin of error pero alam mo naman kung mabagal if for example 50% less ang speed sa mga initial test mo.