thanks Mike for these details,
I realized after all these adventures that it was my hub that could cause problems on my system (HOPDAY docking station), this hub is powered by the mac by 2 thunderbolt sockets and the management of the available energy is a little problematic…
So I made a simple copy of the HD BIAB 2024 on my SSD and I eliminated during the copy the HUB which could slow down the transfers.
I decided to connect the audiophile SSD copy to my Apollo UAD interface and since then everything is smoother and I have the feeling that BIAB loads the RTs faster.
I keep the hub for the moment where the RJ45 and the peripherals for music are connected (master keyboard, midi interface, ILOK key, etc.) but I am thinking of equipping myself with a self-powered HUB if it exists.

MacBookPro M1 max, BIAB audiophile 2024, Logicpro X, UAD apollo, ASR10, marshall, peavey, Vox, Guitars...