External Synth Sync Problem

Hey everyone, hope youre all well.
Im trying to sync my external synthseisers to cubase and after reading every single thread its seems like i have some sort of a bug or unique issue that i whould be greatfull for you to assist me.

I have one keyboard (Keylab61) that controll all of my synths (lets talk only about Phrophet 12 Atm)
While playing the keylab, the sync is absolutly great, nothing to say, but when the midi is recorded / written on the grid, everything is off and there is no sync at all, even when im looping.

any ideas?

Kind Regards!