Interesting, from what you say you don't seem to be too slow, but do you see how it cuts both ways? just like a fast pace player frustrate you the slow playing does the same for many. I think it is easier to adjust for a fast pace. There's nothing wrong with asking for a few more seconds (3 or 4) by putting your hand up when returning, the trouble is that on the opposite case the slow player can go well beyond 3 or 4 seconds extra in his routine. Also, in the case of amateurs where you don't have ball kids, what I do if I feel I'm being rushed I'll make sure I pick every ball on my side of the court every point and I will hit it to my opponent once I get to the baseline (even if it is the 3rd ball and he says to me "I got 2") and the more he wants to rush me the more imprecise and loopy I will be with those balls. They usually get the point sooner rather than later. In my view the very slow playing is detrimental to all parties: players, tv, fans. I do agree that Nadal has improved in that department, but at the end the rules are the rules and it is somewhat disappointing to not see them enforced all the time.