On Status page of WDR3600, the firmware is 141022 or 150518? You provided wrong info on #1?

Upgrade latest firmware(TL-WDR3600_V1_150518) first. http://www.tp-link.com/en/download/TL-WDR3600_V1.html#Firmware After upgrade, reset and reconfigure it(channel width 40MHz). If the problem...

How did you make it bricked? I see someone shared the method here. You may give a try. http://forum.tp-link.com/showthread.php?81462-How-to-recovery-the-router-when-you-bricked-it

How do you download? Do you know what ports do you have to block to limit download on PS4 after 7am before 1am next day? During that time, you have to allow the PS4 access internet, right?

Provide model number, hardware version and firmware version of your TP-LINK device pls... Did you refer to link speed or download speed? Screenshot pls...

There is a troubleshooting guide. Hope it helps... http://www.tp-link.com/en/faq-904.html