This isn't entirely in the O-line. RGIII has zero pocket awareness. He doesn't feel pressure and can't move around within the pocket to buy more time.
This..
Its preseason. Get rid of the damn ball. He scrambled into getting sacked on the first drive. He never was elusive though. Thats the difference between him and Vick, Wilson, Cam. But now that he's not as fast...its even worse.
RG3 also is too chill in the pocket. He doesnt play with a sense of urgency. He has slow eye movement (going from his first read to his second read)
When he's running a 4.3 and in that pistol/spread offense he's great. But when he cant run that kind of offense, doesnt play as fast, not improving his pocket awareness...
He's a below average QB right now. That injury really set back his career.