Have 2 PCs both connected directly to the modem (PK5000) and also have a laptop on wireless. Both laptop and 1 PC net works fine with no interrupts but on one PC there is lag spike at times where webpages wont load at all including modem page. But the messengers work fine and so do the already loaded flash games. ISP is centurylink and they keep sending me new modems saying that could be the issue but that doesnt fix it. So wondering if its the lan card or if the phone lines are messed up. Any light shed is greatly appreciated.
P.S: Changed the ports on the modem where it was connected and changed the ethernet cables as well. Current lan card is realtek (onboard).