When you say lag spikes do you mean picture freezing/slowing down/stop starting? then I would say maybe, I would think a broken antenna would cause you to keep loosing connection as the rang may have been reduced or be interfered with, having said that it could be down to your ISP capping you during peek times, does this happen at specific times during the day or all day?
Compaq Presario CQ5305K-m Intel® Pentium® Dual Core E5300 (2.6 GHz), Windows® 7 Home Premium 64 bit, 2048 MB , Hard drive: 320 Gb, with 18.5 Widescreen
SPURS TILL I DIE (DIAMONDS ARE FOREVER SO ARE SPURS)
TO DARE IS TO DO