Internet Slow Down A Lot After Install Bitdefender Total Sec. 2015

nguyenbahuy
edited November 2014 in General

First thing fist, I've just install a clean windows 8.1, then watching youtube 1080p videos without a sweat for about several hours. Then I install Bitdefender total security 2015 for my brand new system and the internet become really slow after that. Youtube automatically use 240p as a default video quality since it counter so many buffering when watching HD videos. I have an AT&T fiber optic service with 50 Mbps down and 4Mbps up. I turn off Bitdefender Firewall and auto update, every since then watching YouTube become normal again. I need help to fix this please.

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