2.4ghz cutting out again randomly. Any other suggestions?

@Joseph-TP firmware is up to date. Ivr changed the channel width to 20MHz. To note I haven't had any issues for the 2 years I've had this router for all devices until recently (other than an outside...

Randomly 2.4 band will cut out, however the two 5ghz bands continue to stay online and work well. I have to reboot the router for the band to come back online. I have recently changed the 2.4 band...