@tessa_vt An expensive rig.
I am not familiar with many of those applications, I just have Wave Link, Vtube Studio and OBS active when streaming, so I also booted up Halo infinite, Genshin, and Dorf Fort and did a test recording at 60fps 1080p.
Forced my Ryzen 7 3800x up to 80%, and the RTX 3070 sat at around 60% at rest, ate up almost 20gb of RAM, but nothing's burning. Plus prime european internet.
So yes, as TheRMan above said, a lot of everything for the full suite you listed
@tessa_vt If you aren't playing newer games, you can go as low as an i5-4690K and GTX 970 and have a good time with just VSeeFace or VPuppr, and then all you need is a webcam
For newer stuff though, I'm running a Ryzen 5 3600 and an RX 6650 XT and having no issues with running Final Fantasy XV