Series synchro is pretty basic. I find just pausing for half a second between 2nd & 3rd allows the synchro gear to catch up. Dunt lose much road speed & is just a bit kinder to the box.
Formula 1 it ain't never going to be, but with me V it still accelerates quicker than a lot of road cars and although you drop back a little, once safely in gear without that graunching sound it soon catches up again. Really shames them too!