Point of info: there's no speed nor bandwidth issue differentiating 2.4 GHz vs 5 GHz wifi, save one: 2.4 GHz is a far more crowded segment of the radio spectrum than 5 GHz is.
Thus a 5 GHz connection should be less prone to interference. HOWEVER, 5 GHz is a far more directional segment of spectrum than 2.4. while the latter bounces off walls and furniture maintaining enough energy to effectively connect you, 5 GHz is far more vulnerable to total blockage or weakening via physical barriers.
5 GHz is line of sight or a weakened/broken connection, basically.