One downside of PureVPN's tunneling all traffic is that it does not allow use of the local DNS settings. For most people and most needs that is good, but systems like PiHole that block DNS queries for certain sites get bypassed because those DNS servers are on the local network. It would be great if we could specify the DNS server, even if it is our external IP address (so we'd have to port forward the DNS query back to our local server). This is not that unusual since Raspberry Pi systems are <US$50 to set up and VMs are free.

when using split tunneling to have only a specific application go through the VPN, such as a Torrent downloader. It seems that you must launch the application from within the PureVPN Settings, Split Tunnel screen.....otherwise it does not use the tunnel.

I am thinking this, because I just recently paid for this VPN specifically for my torrent program, and have been having issues where I am still detected and receive notices about my activity.
my internet connection does randomly disconnect temporarily. after my first notice with the VPN...I found and enabled the "Internet Kill Switch" in the settings, but got a notice about my activity after PureVPN disabled all my internet. (I leave it going over night downloading, etc)

I just found by fluke, that I can launch my torrent program within the PureVPN Settings, Split Tunnel section.
which seems it might be required to make the application actively using the vpn. but I have not had a chance to try the downloading difference yet.

my suggestion....is that if this is required, to run the desired application from withing PureVPN...then on the main screen there should be a side panel or something to make it easily visible and accessible to launch your desired applications....rather than having to hunt through the PureVPN Settings section.