My Xiaomi smart speaker IR control, loses its wifi connection all the time. When i reboot it, power off/power on, it has a good wifi connection, but after a while (a couple of hours, 1 day or so) the wifi connection is lost, it it not found in Google Home nor the Xiaomi app. I tried seperate bands (2,4 & 5 GHz seperatly, makes no difference. WhAt can be wrong?