How do you set optiomal receive on Pro-652

I have programmed the pro-652 and a Uniden comparable model with the same frequencies, and the Uniden is picking up the frequencies quicker whereas the pro-652 has a significant delay before stopping on the frequency.

I am a novice on the software (ARC500), and there must be tweaks I can make to speed up the pro-652 response time.

Any help is appreciated.

Thanks

Mary