Running iLogic rules from .net app is extremely slow

[greg.mort]

Open inventor, run a rule that makes a handful of parameter changes, etc. It takes ~20 seconds to run

Open a .net app that uses the Inventor .net API to call 

iLogicAutomation.RunRuleWithArguments

with Inventor running in the background or as a separate app

it takes minutes to run.

How can we have similar performance to running these rules as if we ran them manually within inventor?