What might cause an executing process from windows service to run slower than running from command line(admin)?

Question

What might cause an executing process from windows service to run slower than running from command line? When I execute a process(another exe) from teh command line with admin rights, it is four times faster than when a windows service executes the same process. What could be causing this. Permissions on directories and files are okay for the account. It runs successfully, just 4x slower. Need ideas on what to investigate to figure out the problem.

We have been using sysinternals processexplorer and not seeing anything.

Where is the advances tab with the ability to modify the "priority" to see if that is causing the problem?

Answer 1

In Windows background services may be given less priority, and that is configurable in the advanced tab of computer properties.