Load Runner Response time is More than SOAPUI

  I need help :--

1. LoadRunner has the ability to measure its own API time, a concept
called wasted time  -- How to calculate this time and Exclude from the response time?

2.

VUGEN is a development environment for script debugging.
In production the scripts run in a headless mode which is when the times would be relevant.

But there will always be an overhead from the VUGEN dev environment.----   How to resolve this?

3. Any other Work around to less the response time......