I just watched my score during a drill, and noticed that the points awarded for each question seemed to depend on response time. My score even went down sometimes after a correct answer.
Is response time a factor in the drills? I don't recall this being mentioned anywhere in the instructions.
I tend to take my time and practise all the alternatives before answering (hence my 100% record). I don't much care about the score, but if response time is factored into the SRS algorithm, this could presumably become a problem.
PS: after submitting this question the first time, I was prompted for my login details. After entering my details, I was returned to the editing page, which had been completely cleared, and I had to re-type my question.