Hi, all, my notebook is Fujitsu LH532, I have upgraded the lan card to Broadcom BCM94352HMB, I am using the Netgear R6300 v2, with win 8.1. Before the upgrade, for lan network, the speedtest for dowload >800m, for upload >800m, but after the upgrade, the lan network is only 400m for dl, and 800m for upload, and for wifi, is it very very low, only 130m for dl and 200m for upload. I have updated the 8.1 driver of Broadcom BCM94352HMB and for the lan Realtek PCIe GBE Family Controller. What's the problem? The driver's problems? or the setting of router?