prime:vocal uses neural networks to detect and correct issues in the audio file. These networks require relatively high computational resources, which means that the complete analysis of an audio file (depending on the target system’s hardware) will take approximately the length of the analyzed file (for example, analyzing a 1-minute file can take about 1 minute).
The good news is that you can start working on the audio file (or the audio clip in the ARA version) while the analysis is still in progress. Sections that have already been analyzed will turn green in the track overview and are ready for processing.