LA Noire doesn’t utilise multithreading correctly on modern CPUs with many cores and threads. There are two work arounds which should resolve the issue.
Method 1 –
Enable single threaded option in the .ini file for the game. This should fix the problem for modern cpus with strong single core performance. This is also a permanent fix unlike method 2.
Method 2 –
Disable CPU 0 and CPU 1 in task manager while the game is running to force multiple cores to be utilised. This is a temporary work around and will need to be done every time the game is restarted.
Method 1 should work for most recent CPUs with good single core performance however use method 2 if this is still not resolving the problem.
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