I'm using standard windows routines to access the (usb to) serial port. Is there a way to program (i use delphi) the parameter which is available in windows 8's device manager under ports->usb serial port->properties->port settings->advanced->BM options->latency. Due to this latency, which is 16 ms by default, my cbInQue resolution is too low. I'd prefer 1 ms, but don't know how to make my application change it.
No, there isn't. All you can do is look up the setting in the registry and check whether it is correct.
It might be possible to change it there too, but I wouldn't do that.