HP laptop Issue with wifi speed and upgrade question

my internet is 150Mbps/150Mbps speeds, but my HP latpop (model: 2000-2b22DX) is only giving me 90Mbps. I tried every possible change to the router's settings to maximize wifi speeds but no luck, still getting only 90. This is the same case with other routers. what can I do to increase the wifi speed to 150? It's a b/g/n wlan/wifi card. Do I have to upgrade the wlan card? if so which one would you guys recommend? Thanks.

I didn't find the right solution from the internet.

References:
- http://ift.tt/2p85SsY
- Car Sharing Solution Video Examples

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