If you have your 'connect to internet' box checked on your PS4 system settings, and you lose Wi-Fi, the Bluetooth controllers will lose sync, at what seems to be a random time, afterwards. I unfortunately have no internet service provider where I live but I am able to use hotspot via my phone. If my phone dies while I am using hotspot for my PS4, I will lose my Wi-Fi connection, and shortly later my controllers will unsync. I have to perform a hard reset to get my controllers working again. This problem only occurs when I have the 'connect to internet' option activated but no wifi access. So put simply, if you have the 'connect to internet' option checked, make sure you have sufficient internet or it will annoy you greatly. I wouldn't spend money on a new controller or try to fix my antenna just yet. . . Pretty sure it's some sort of interference issue between Bluetooth and the PS4 attempting to connect to Wi-Fi. Hope that helps...