Fresh clean install of Debian 9 on Asus laptop. Had to install realtek non-free firmware for network on install. rtlwifi/rtl8821aefw.bin rtlwifi/rtl8821aefw_wowlan.bin was requested and installed https://packages.debian.org/jessie/firmware-realtek this package.
Symptoms; Wifi will periodically time out and no browser/cli will have internet access, often after 3-5 minutes this connection will come back and pages will load as normal. The machine stays connected to the network, it doesnt get kicked off just stalls and times out.
Problem does not persist when running windows on the machine, and furthermore does not persist with other flavours of linux, ie kali/tails I have tested.