Do USEUNIT impact to performance when running script?

Dear all,

I'm not sure if Im using the USEUNIT to call other functions from other scripts when I need it or add all them into one script and only import it for other scripts

Ex:

The 1st way

Script A

Script B

Script C

Script D

  //USEUNIT A

  //USEUNIT B

  //USEUNIT C

The 2st way

Script common

  //USEUNIT A

  //USEUNIT B

  //USEUNIT C

  //USEUNIT E

Script A

//USEUNIT common

Script B

//USEUNIT common

Script C

//USEUNIT common

Script E

//USEUNIT common

so when the TestComplete is running, does it load all code of script in common in memory or not? is the 2nd way impact to performance if there are a huge scripts in a test suites?

Thanks,

Vinh