I've got this issue that seems to have only manifested itself since the last patch. Basically I've now got this 1 Second pause, stutter or hitch. Whatever you'd choose to describe it, using only Open Wheel racers. Tin Top racers are fine, smooth and 60 frames and no drops. I've done the usual to maintain framerates. FPS is locked, v-sync is on. Shadows not at Max and time scale off. The usual stuff. My framerates have been glorious up to this recent patch really. If I race a Tin Top (choose any) at a specific track then the FPS is smooth, Locked at 60. If I choose an open wheeler with the same track the FPS is still locked at 60 but there is this 1 second stutter, then smooth for 1 second then another 1 second stutter. this happens no matter the size of the grid. I'm think extra parameters are added to the open wheelers the tin tops don't have. It's driving (sic) me mad as everything was fine. I'm on Steam by the way so no chance to revert thanks to Steams awful patch delivery system. Anybody having this, I'd love to resolve it?