While the actual scan times will vary depending on the specs of your computer, here are the timeframes it took for us to complete different types of scans in our tests:
8 GB USB Flash Drive (All recovery methods) - 4 minutes.
250 GB internal HDD Partition (Quick Scan) - 1 minute.
10 GB Internal SSD Partition (All recovery methods) - 2 minutes.
128 GB Internal SSD (All recovery methods) - 50 minutes.
As is evident, full scans take a while to complete. A full scan of a 1 TB HDD may take more than 2 hours to complete.