No.
I can't notice the "blockiness" of the shadows when I'm racing over 100mph on the Ring or even 200 mph. I don't sit and watch replays all day, I race. So it doesn't bother me. Nor do I notice 2D trees.
I'm in no way trying to defend PD or GT5, I simply do not care about that. If they are going to take the time to patch something, please let me customize the HUD, the gears on the transmission, and give me some more premium cars and tracks, possibly more race events. Other than that, I'm good.