After update the latest firmware i am facing some problem in ping request time out through wifi when pinging by using laptop and also in mobile phones sometimes some apps like you tube, instagram are not working properly and after restarting the router everything backs to normal for 2-3 hours and again facing the same issue i am using ofdma and twt with 2ghz and 5ghz on. i changed my router for one day and noticed that there was no problem,it suggests  that this problem not from provider... please help what to do... Through lan there was no problem such that