RTC 3.0 - Can archive project function enhance RTC performance?

My customer has over 60 project areas and they would like to archive number of project areas to improve RTC performance.
The question is, will archiving unused projects improve RTC performance? If not, guess will need to run -deleteProjectAreaResource?
Relate to above question, does data collection job collect data from archived projects as well?
The question is, will archiving unused projects improve RTC performance? If not, guess will need to run -deleteProjectAreaResource?
Relate to above question, does data collection job collect data from archived projects as well?