The following is a list of the fastest players in the NFL. The first 11 are wide receivers, and the last, Patrick Peterson, is a CB. The list was composited in June, 2017, so there will be some changes, including add ons possible.
Fastest Players in NFL
Wide Receivers
Tyreek Hill - 4.24
Marquise Goodwin - 4.27
J.J. Nelson - 4.28
Ted Ginn - 4.28
DeSean Jackson - 4.35
Jakeem Grant - 4.38
John Ross - 4.22
Brandin Cooks - 4.33
Taylor Gabriel - 4.27
Odell Beckham, Jr - 4.43
Julio Jones - 4.39
Corner Back
Patrick Peterson - 4.34
GB Packer Wide Receivers
Nelson - 4.51
Cobb - 4.46
Adams - 4.56
Montgomery - 4.55
Janis - 4.42
Allison - 4.67
Clark - 4.53
Davis - 4.42
As I look at the "most productive" WRs around the league, amongst the fastest, I found that two stood out. Jones and Beckham. Strangely enough, their speeds were at the tail end of the speed list at 4.39 and 4.43. If we want to believe Adams is our top receiver because of his speed, it's a little deceiving, because only Allison is slower than he is. Our two fastest WRs, Davis and Janis, aren't that effective.
What I'm driving at is that speed is wonderful, if you can properly harness it. A team's capability of harnessing that speed is dependent on a lot of issues, and one of them is the ability of the offensive line to block. The funny part is, a team that blocks well will be a huge benefit to the speed merchants, and the slower, more methodical, route runners as well, because both can accomplish their goal. For the faster receiver, they can clear the defense. For the slower, methodical receiver, they can make their moves, and complete their routes, and be in position for the pass.
Although I keep hearing how slow the Packers receivers are, as I look at the list of guys going into 2017, my only complaint is that we don't have a "stretch receiver." The idea that people have that Nelson was that guy, was never true. He's our possession receiver, and "go to guy" when you need that catch that moves the chains when it's do or die. To cast him in any other role is not realistic, because it's not who he is, nor never was. His moves, and his catches, were because of his precise routes, and strength when it comes to making catches. It was never blinding speed.
This idea of throwing guys out because they aren't fast enough doesn't make sense. I'll take the guys who run a little slower and hold onto the darned ball, not those that fly down the side line, get bumped, and can't even catch themselves. They're good for the occasional long bomb, and to keep defenses honest, but you aren't going to win a lot of games counting on them constantly getting behind the defense.
By the way. The list of players I've shown for the league are also the fastest in the league, as of that date, regardless of position.