Its a cpu problem. game cant run on more than 4 cores.  It a problem if you have a processor with hyperthreading that has essentially 8 cores (4 virtual ones). To fix this u have to find your hardware_settings_config.xml file.  My save file vas in my documents/my games/dirt rally/hardwaresettings/ Open this file with notepad and replace lines of code from <cpu> to <cpu> with this: <cpu> <restrict_if name="cores" op="int_eq" value="4"> <restrict_add> &l