Further information :

Indispensable: In Project64, click on "Options" then on "Settings" in the "Options" tab, you must uncheck the box "Hide advanced settings".
Then you have to go back to the settings, there will be many more tabs, click on "ROM settings", and set the size of the RDRAM to 8mb.

This is the Super Mario Rainbow Road Plus version which adds 6 more stars the previous version had 54 stars.