Increase File Sharing Cache

To increase the amount of memory Windows will save for locked I/O operations, open the Registry and look for this string:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SessionManager\
MemoryManagement

Right-click on the 'IoPageLockLimit' string in the right pane and enter one of the values below in the Value box:

  4096    For 32 Megabytes of memory or less
  8192    For 32 to 64 Megabytes of memory
 16384    For 64 to 128 Megabytes of memory
 32768    For 128 to 256 Megabytes of Memory
 65536    For 256 or more Megabytes of memory