EPC3825 - very slow internet using wireless

Hello. The other day I decided to upgrade my old 10/2Mbps connection to a 100/5Mbps cable connection and my ISP gave me the EPC3825 router. When using an ethernet cable everything works great and my speedchecks max out every time, the problem is that I can't have cables all over my apartment so I'd like to use wireless. With a computer located right next to the router I've gotten as high as 20Mbps and usually I'm left at about 3Mbps. I'm aware that using wireless can result in a small drop of speed but this just seems too much, especially considering the fact that I ran a steady 10Mbps when using wireless on my old connection.
I have tried every solution I can think of in the router setup but if there's anything that might help I would appreciate it.
Model:
Cisco EPC3825
Vendor:
Cisco
Hardware Revision:
1.0
Bootloader Revision:
2.3.0_R3
Current Software Revision:
EPC3825-v302r125532-110504c
Firmware Name:
epc3825-v302r125532-110504c.bin
Firmware Build Time:
May 4 14:04:04 2011

Hi Fredrik,
Thank you for your question. However, this community is for Cisco Small Business Products and the EPC3825 is not a Cisco Small Business Product.
Your product is an internet service provider (ISP) supported product. In other words you need to contact your ISP or technology reseller that you purchased this from to help you with your question.
For more information, please go here: http://www.cisco.com/web/consumer/support/prod_modems.html
Regards,
Cindy Toy
Cisco Small Business Community Manager
for Cisco Small Business Products
www.cisco.com/go/smallbizsupport
twitter: CiscoSBsupport

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[email protected]
+966-542239758

You have posted your question in a Contact Center support forum. You may have better success over in the Security forums found here:
https://supportforums.cisco.com/community/netpro/security
Good luck and happy securitying!
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Please use the star ratings to help drive great content to the top of searches.

EPC3825 - very slow internet using wireless

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