Folks, I have a Dell desktop with a Qualcomm-Atheros QCA 9565 wireless adapter. Here lately it has been acting a bit glitchy and erratic. Doesn't matter whether I'm using the local wi-fi network or my cell as a mobile hotspot. Would it be more effective to install a PCI-E wi-fi card with an external antenna? Would I be able to pull a stronger signal from my hotspot?