This actually had a fair effect on my race performance, too. I was typically around the middle of ACRL's second split in performance for GT3. You can see the effect VR had on my results (split 2 unless noted otherwise):
* Imola: 18th
* Red Bull Ring: 19th
* Monza: 6th (split 3)
* Spa: 16th
* Paul Ricard: 10th
* Bathurst: 4th (got VR the week of this race)
* Silverstone: 2nd (my first podium)
And then from the season 3 months later:
* Mugello: 8th
* Donington: 3rd
* Zandvoort: 8th
* Nurburgring GP: 5th
* Interlagos: 21st (got into split 1 for the first time)