• 32/64 bit has nothing to do with network speed - if speed is lower the issue is with the package and what it is doing and the configuration of the dataflow tasks. 

    Exactly how are you running the packages? SQL Agent SSIS task or Command line dtexec? If your SQL Server is 64 bit and the flags are not set it will run in 64bit - if running through command line dtexec this can easily be verified by looking at the task manager for dtexec process - if it has a 32 in front of it it is running in 32bit mode else is running on 64bit.