This is not the first time I have seen a device with WiFi Issues, where there are multiple WiFi signals in the vicinity. I thing I’d recommend to do and test is change the WiFi channel. Generally the issue is when you are using the same WiFi channel as several others, causing the drop. Get a tool to identify the channels and use a different one (or the least common one). Also try changing the b/w 2.5 and 5 Ghz if that is an option.