Other than picking up the FPS (which I don't believe requires Experience specifically) what is missing?
All Experience adds to Ansel is "easier sharing" of the screenshots: https://developer.nvidia.com/Ansel
All Experience adds to Ansel is "easier sharing" of the screenshots: https://developer.nvidia.com/Ansel
(https://moonlight-stream.org/ is a fantastic open-source implementation of the client side part)
MSI Afterburner is another one I've seen mentioned but I've not tested it.