1. Put as little in between the computer's antennas and the routers as possible...it already has to go through a floor. Moving the computer around in your room may improve the signal strength and SNR.
2. Make sure you are on the non-compeatingest channel available.
3. Some routers can up their transmission power to 100%...this will heat them up. Make sure both your computer's and the router's are set to max. transmission.
4. Buy an external amplified antenna for your computer.
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