I used to watch youtube at 480p without any problem with my 2mbps plan. But from couple of days i am getting slow speed while surfing and streaming. Cant even watch at 240p. I know i should have contacted my ISP first but my download speed is working perfectly as it should be (what should i tell em). The problem is only occurs while streaming and sometimes surfing. What i did for trouble shooting: Tried different browsers. Tried different device. Checked no one is using wifi while i am streaming. closed all the software that can use internet like spotify etc. Restarted my router. Cant even watch in my android YT app in the night while everyone sleeping. also Speed test dont show the correct result. Most of the time they dont get close to 2 mbps, but still get the right speed in download manager. Its like affecting everything except downloading. There is lot of use of youtube in my house (but mostly one person do it at a time). My plan is unlimited. Could this be my ISP doing it on purpose because of the lot of use? I heard somewhere about that they can do it. What should i tell them when i contact their technical team?