You can´t increase the sample rate on your car.
VCSD manages on one block 3samples/sec. , two blockes 2 samples/sec, 3 blocks 1sample/sec.
No further increases possible.....
The acceleration measurement is a nice feature but if you wan´t "bulletproof" measurements you have to use a gps based device like racelogic powerbox or similar.
If you´re not crazy about the last tenth of seconds VCDS offers a good tool to compare different maps if you use the same test road and car and to have a quick look if the remap is better or worse than before.