Strong cpu spikes on brand new macbook pro M5 pro macos tahoe

Hi everyone, I’m experiencing something odd that didn’t happen on my old macbook m2 pro.

Me and my band play live using Ableton Live. On the first notes I play, on several instruments, I get high cpu spikes that sometime cause audio dropouts. Afterwards it seems to go smooth.
I have different instances of Analog Lab and with every scene I send program change messages to load the proper synth on every new song.
This actually happens also with individual plugins. I use vst3, but it also happen on Logic wi AU (if I look at the CPU window, the bar rises to the top sometimes).

I copied my projects and my presets from my old m2 pro to this m5 pro (I did a fresh install, not from a time machine backup) and I’ve read out about permission and xattr, but with no success.

I tried contacting the arturia support, but I’ve not sorted it out yet. They suggested me to reinstalla analog lab. At first it seemd it worked, but when I tried later nothing changed. They’re looking at my presets file, but it seems to happen also on factory ones.

I’m reading about M5 pro new core architecture, I wonder if I’m the only one.

There are a few synths we use that are considered “legacy” and I select include legay sounds (stage 73, cs 80 v3, jupiter v3, prophet v3) but this issue happens mostly on all the other not-legacy, as far as I could see.

I read that on Tahoe, Arturia wants us to allow ASC full disk access, and I did it.
On my m2 pro I also run Tahoe, almost from day 1, but I never had an issue.

Thanks!

edit: I forgot to add that I use 128 buffer with 48khz sample rate