Well I see a slight improvement after the patch.
The Ocean View Trail Exhibition race near the beach which is always my testing zone for frame drops performed better after the patch. Usually as soon as the race starts, my framerates drops to like 23~26fps and then goes back to 30 under the cave, and then drops right before you drive up the little ramp to get on the main road to which it stays at 30fps for the remainder the race. This time, the race started and the fps only dropped to 29fps for a split second and then it stayed at 30fps for the rest of that area which usually drops again and then goes back up.
I still get a little input lag though which is really my main problem.
My specs:
I5 4690K 4.4GHZ Overclock
8GB Ram
3GB R9 280 1101MHz Core Clock 1500HZ Memory Clock
I updated the game, and then I did the reset app thing in the settings menu of Windows. I then started the game and the game told me low preset at 1280x960 was recommended lol.
But still, the input lag makes this game not fun.