I have a 160 equipped but it doesn't matter which one I use it's mega slow. I can't even make the little jumps on patrol around the moon, it falls down the gap. I think it's the 'Tree of Probabilities' strike where you get on your sparrow and jump over the gap and carry on avoiding the lasers. Before, I had no problems hopping on my sparrow and making the jump. Now I crash everytime. I have to jump over on my Titan and then get on my sparrow. When I load into strikes and get on my sparrow first I can be far ahead of people but because it's so slow people catch me up and then pass me and take off into the distance. There's definitely something up with sparrow speed, it's not me being rubbish. I don't claim to be the best sparrow racer ever, but something has happened to the speed, for me anyway.