If you are experiencing system performance issues in ROM based File systems, here is a nice tweak to boost up the performance. Most of the times, this slowdown will be due to constant registry flushing in to ROM in background.

[HKEY_LOCAL_MACHINE\init\BootVars]
"RegistryFlags"=dword:2
If this variable is set to 1, it will enable aggressive flushing of registry on to ROM. Setting it to 2 will disable background flushing and can improve performance of system significantly.

Reference: http://msdn.microsoft.com/en-us/library/aa914382.aspx

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