Original from Codemasters Board, User
afborro:
"I have changed and no longer flashing crowds"
"I have it too. Not in the main stands or anything as bad as last year, but some of the spectators near the fences. Last year the game had this issue introduced after the last patch, and I happened to be able to 'fix' it for core 2, some others did it for 4 core systems too. Now it has changed a bit and I binned all the 2011 stuff and fix I did for that, but just looking at the system 2 core file I suspect it is the line:
<workerSet name="build_crowd" jobpoolsize="1024"> <worker name="core_1_below_normal"/>
You could try setting this to:
<workerSet name="build_crowd" jobpoolsize="1024"> <worker name="core_1_normal"/>
I have not tried it myself as yet, may get around to it will let you know. Of course as the workaround suggests it comes at a small sprice. I can't guarantee this is the right line for that matter, this is from recollection from last year, but for 2 core it is in the
your path\Steam\steamapps\common\f1 2012\system folder
save and backup that file and try that change, perhaps it will resolve it. Worse case you may get some stutter or at worst an entire lockup of the game, it will not hurt though to try, just restore the file if it doesn't work out. Note and beware revalidating cache and restoring from steam can overwrite these files anytime, especially seeing the regular patches lately.
Note that it is important to know which system file your PC uses, you can check this in
Documents\My Games\FormulaOne2012\hardwaresettings
in the file
hardware_settings_config.xml, near the top it will read something like
WorkerMapfile=system\workermap2core.xml or
WorkerMapfile=system\workermap4core.xml, as appropriate for your system.