Anyway, these issues could be user issues or bad luck (so please don’t comment on this), but I have one nitpick which isn’t:
USB 2.0 speeds for pro-res footage are a joke. Why even praise your camera and the pro resolution format being introduced on iphone, when I can’t get it off my PC via cable vat decent speeds? I only used it once to make for a side project, and had ~30min of footage. Took about 1.5h to copy.
Likewise, USB-C ports on a spec-compliant device do not indicate greater than USB 2.0 speeds (e.g. high speed), nor do cables with USB-C ports on both ends indicate greater than high speed.
In fact, there are plenty of devices with USB-C ports which do not support data channels at all (but these tend to have compatibility issues due to not being able to negotiate power delivery)