Netflix detection of WireGuard (NordVPN)

Does anyone use WireGuard (NordVPN) without Netflix/Prime detecting VPN use? I have found that when watching Netflix on our Samsung TV, Netflix does not detect VPN. But when watching Netflix on our LG TV, Netflix does detect the VPN. I wondered if this could be because of a DNS issue so tried hijacking DNS queries to force use of the NordVPN DNS, but that didn't get around the detection on the LG TV.

Any thoughts? I presume the only way round this is to use PBR and route the TV traffic through to WAN, but unfortunately this breaks my SQM and I get bufferbloat problems.