Hi,
I have been doing some more research on this issue. I purchased 2x Intel adapters. 1x Intel AC-7265 and 1x Intel AC-8265.
This is in addition to the stock Intel AC-3165 that came with the laptop.
It appears that the issue is to do with the BIOS.
For example:
If I enter the BIOS while using either the 7265 or 8265 and say 'Load Defaults' and reboot, when the laptop boots the hardware ON/OFF switch is triggered in the OFF. This cannot be set back to ON in software. That is to say, the Adapter shows in Device Manager but is not switched on, there is also no Bluetooth.
Now, if I go back in to the BIOS and 'Load Defaults' again and reboot then the issue above is restored.
The Intel AC-3165 does not have this problem, this is rather bizarre considering I had been informed that there is no whitelist in the BIOS for Wireless cards.
This also does not seem to be a comptability issue because all 3 cards work. it is just 7265 and 8265 and actually even my first card the 8260 have an issue when the laptop POSTS or the BIOS is entered.
So:
Intel 3165 = No issues
Intel 7265 = HW Switch is OFF when BIOS is entered. BIOS again restores the issue.
Intel 8265 = As above 7265
Intel 8260 = When BIOS is entered the device is missing altogether, BIOS again restores the issue.
Killer AC 1535 = Wireless Connectivity but no Bluetooth.
I fail to see this as a compatbility issue and I put the fault squarly on the BIOS as this controls the hardware connected. I believe it is a bug and can only be resolved by testing from Acer.
Of course Acer won't do this because they will say that they don't recommend changing the Wireless adapter and they don't support it.
It is likely the Intel 3165 being a 1x1 AC Card is not as complex internally and does not have many pinouts connected on the card however the others being 2x2 do.
Having said that, this is the first laptop I have used that has this really awful issue.
Current BIOS is 1.17 and there does not seem to be a later one, either official or beta.
Cheers