Update 1.6 includes:
[*] Fixed occasional stability issues.
[*] Improved usability of in-game tools.
[*] Improved AI ability at various tracks.
[*] Improved the penalty system.
[*] Optimised tyre wear in wet conditions.
[*] Optimisations to LiveTrack at various tracks.
[*] Improved track-limit zones.
[*] Other miscellaneous fixes.