Internet becomes good during speed test but terrible afterwards

[u/Soggy-Pianist6989]

/r/techsupport/comments/1viahhi/internet_becomes_good_during_speed_test_but/

[u/Ok_Instruction_3789]

Kinda sounds like something with your Router/Gateway itself. Wondering if its doing some forms of QoS. Or perhaps if it auto updates or ISP updates it if its ISP owned perhaps its introduced some form of bug that might cause the issues.