ok, i see your point. i guess i just have to try it.
regarding
You will struggle to capture a continuous stream of data with a PC at that speed although it will manage short bursts.
just out of curiousity - why will i struggle? it can't be the USB bandwith. and the hardware and operating system should be able to handle it if this connection speed is available. and those UART chips are in the motherboards for ages ...
ok, this time i will start directly with linux or mac to save me this PITA.