I need a suggestion. I have about 40 devices connected to my 2.4ghz wireless router and this seems to be causing a major functionality issue with my router. It causes the whole router to slow then not

I upgraded my internet from 400 - 940MB/s. I did the firmware updates to 1.2.5 and now after a day or so my speeds drop to 200MB/s max. Only way to restore the speed it reboot the router. I have had t