I don't think you have watched any of the Redskins games and just looked at the box scores.
I'm not saying he looks great, but I'm sure RG3 is not the first QB who ever start slow in a game. So the game against the eagles with 9:15 left down 33-20 in the 4th with a redskin possession is considered uncontested? Why didn't the eagles pull their starter? Were they running the score? Or maybe RG3 was putting up those numbers against 3rd stringer to pad his stat. Come on, now! I don't wanna hear between the numbers story. 325 yards/game 63% comp. is good no matter what standard. Teams don't take their foot off the gas. That's what the 3rd stringers are for. Teams don't play soft with their starters because it risks injuries.
The Eagles were up 30+ points and conceded little 8 yard passes.
Once the score did get to 33-20 and the Eagles tightened their defense up again the Redskins went out on downs. By the time they got the ball back the Eagles once again was conceding short throws to try to make the Skins use up time.
They had literally zero meaningful scoring drives.
It wasn't a slow start it was a no show.