It seems to have fixed it up!

i think its been out for abit now. didnt make any noticeable changes for me. or maybe it was a different patch i had.
game runs smooth for me at about 80-100fps

* Fix for sessions list overflow and missing characters in front end.
* Fix for errors generated on game shutdown
* Support for TrackIR
* Online experience points: more points awarded for completing longer races
* Assists on/off toggle added to session creation and browsing
* All offline events (apart from head-to-heads and touge) are now available
* online (event voting screen now scrolls to see additional championships).
* Fix for failure to recognise some devices in user-created action map presets, including Logitech Cordless Rumblepad 2.
* Fixed GRID startup issue where it appears as a process in Task Manager but fails to run.
* Additional experience points are awarded for not colliding with other cars whilst racing damage on or forward sessions.

finally more points for longer races. this is def not the same patch i had.
thanks for the heads up!