Ive been doing 5x5 for squats, deads, and bench and I noticed they take a while to finish. I usually take about 20 minutes for squats and deads, and a little less time for bench. Does this sound like my time between sets is too long? For the last few weeks Ive tried out 4x6 and I like it a lot better, but should I go back to 5x5? I do one of the big 3 exercises each workout day, always first.