In your case channel 1 should be the best channel to use but you might have better luck with channel bonding turned off. Try different channels and check the wireless speed to see which one is best.
My Computer
At a glance
Windows 7 Ult, Windows 8.1 Pro,Q9650-4.275GHz, E8600 4.5GHz, E6750-3.8GHzG.Skill PC2 9600 1200Mhz 5 5 5 15 2TGTX480