I have a Ruf RR as main drifter (not doing a lot though, only quick online golds).
The torque is great, generally works well from low RPMs, so not clear how your shifting is giving issues. Drifting something like a Lotus Elise, this is something else on shifting issues.
I also guess you are trying to shift the whole track and not just sectors?
in a sector (what I generally do) I try not to shift.