Increasing the channel with (40MHz -> 80MHz for 5G, and 20MHz > 40MHz for 2.4G) will increase the theoretical maximum speeds you'll get from your wifi. On the flip side, this can have the side effect of reducing range due to it being more prone to noise and interference (in extreme situations, you could also see your speeds drop even at close range if there is a lot of noise in your environment). It also causes more noise/interference/congestion for your neighbors. So, with that all in mind, if you live in a dense environment, you should probably stay at your current channel widths. If you're in a more sparsely populated housing environment (suburbs or out in the country), go wild!
And in the meantime...
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