Using 2.4Ghz is like using a network cable that all of your neighbors share at the same time, and they have the ability to saturate it with interference and you can't do anything about. It might be fine one day and not fine the next. There are only 3 non-overlapping channels in 2.4Ghz and everything from baby monitors to security cameras to walkie talkies use that frequency. Not a good recommendation.
5Ghz has far more channels and is a much better option.
A wire is even better, but not always feasible.