Hi everyone,

I've come across a strange anomaly which for the life of me cannot solve, however I'm hopeful that a kind vMixer could enlighten me to what I'm missing! So here is my conundrum.

I've recently purchased 2x NDI-HX PTZ cameras, a pair of Lumens VC-50ND that send NDI-HX

I first used them in anger during a livestream using my vMix laptop setup, connected by POE gigabit switch and using NDI, PEO and Control. Worked like a dream, super happy, no complaints - laptop specs below:

• Intel Core i9 Eight-Core Processor i9-11900KF
  32GB Corsair 2933MHz Ram
  NVIDIA GeForce RTX 3080 (mobile) - 16.0GB GDDR6 Video RAM
  500GB Samsung 970 Evo Plus M.2
  1TB Samsung 970 EVO PLUS M.2
  2 x Thunderbolt 4 + 1 x USB 3.2 (TYPE C) + 3 x USB 3.2
  2.5G Ethernet
  vMix Pro

THEN - I test the cameras again, but this time using my vMix Desktop Studio PC (specs below, but theoretically far superior). The cameras connect and behave fine, however as soon as I add the cameras to vMix (or NDI Studio monitor) my GPU usage in task manger goes up 25% per camera, so up to 50% for the 2 NDI-HX feeds.

• Intel 10980XE 18 Core
  64GB RAM
  1TB + 4TB SSD
  2.5G Ethernet
  Nvidia RTX 3090
  Blackmagic Decklink Quad HDMI 4K.
  vMix Pro

I put my laptop into my studio network and added the same NDI-HX Cameras to vMix over the same network and there is no problem at all, but every time I add the NDI feed to a vMix production on my Desktop (Intel 10980xe - Nvidia 3090) It immediately shows increased GPU 3D usage in task manager. I've reloaded drivers, reloaded vMix and NDI tools to no solution.

I did start to use GPU-Z and MSI Afterburner to read my GPU usage and it reported very differently. Task manager would show 50% (3D usage) and GPU-Z and MSI Afterburner would show around 5% GPU usage, which makes sense to me.

I guess my question is, should I just ignore task manager GPU read out, or is my computer about to set on fire!?

Thanks in advance, this forum has taught me everything I know about vMix!