hello, the problem is solved thanks to Andrew-PG team, indeed the box was not checked and in addition I regenerated the prefs and now the loading of the RT is almost instantaneous, I tested and no notable difference between a system installed on the internal SSD HD and an installation on an external HD, namely the HD provided by BIAB for the audiophile versions...thank you for your comments


MacBookPro M1 max, BIAB audiophile 23, Logicpro X, UAD apollo, ASR10, marshall, Vox, Guitars...