It is possible to increase the memory usage, so it can handle more concurrent file operations:
Note the utility fsutil can also be used to change this value:
[HKEY_LOCAL_MACHINE \System \CurrentControlSet \Control \FileSystem]
NtfsMemoryUsage = 1 (Normal = 1, Increased = 2; Default = 1)
Note this setting is mainly for server systems with a high end disk system that consists of multiple disks, which is bombarded with file operations (Like a Web-Server).
fsutil behavior set memoryusage 2
More Info MS TechCenter - Fsutil: behavior
Note when increasing the memory usage, then it will use more of both paged- and non-paged-memory. Therefore make sure that existing services/drivers are not already using the available paged and non-paged memory, as these services might perform worse with less memory available.