I find all SpaceX launches to be "slow" compared to (some) other launches. But this is mostly due to the Falcon not having any solid rocket motors: These produce a massive amount of thrust (far higher than liquid engines) and thus a high accelerating force right from the beginning. You can see that in e.g. Shuttle launches or the recent Vega launch (all solid motor), compare them to other liquid-only rocket motor launches.
Same here, but they said the liftoff was nominal so I'm guessing it's either imagination or camera angle. This stuff is really hard to judge from video.