Skip PerformPut for BP5

[guj]

Is your feature request related to a problem? If so, please describe.
PerformPut is useful for BP3/BP4, and it is not needed for BP5.

For BP5, call either PerformDataWrite, Put(sync) Put (deferred), followed by EndStep will do.

[guj]

Plot on the right shows extra metadata overhead (marked by red) caused by calling PP on Frontier

[franzpoeschel]

I have added a prototype for this on #1756. Can you test that please?