Your GeForce RTX 4070 Ti Super can only decode 10-bit 420 HEVC. Your CPU has a Intel UHD Graphics 770 which can decode 10-bit 422 HEVC. I have a similar iGPU but don't find the performance all that great in VEGAS.
My suggestion would be to find sample footage from this camera or a similar one online and test it before you buy the camera (or if in the store they let you shoot a sample onto your SD card do that).