I´ve got an Audya 4 + 5, and I´ve been really thinking of upgrading them by that Ajamsonic SSD for some time; I´m afraid I won´t take that risk - when Ajamsonic started to offer that upgrade, there were many complaints e.g. about freezing from users who had decided to buy it. Meanwhile Ajamsonic tells us that those issues had been solved. Your lines tell us something different. I think I´d rather accept the limitations of the original - but after all reliable - Audya (the audience don´t realize them anyway) than to risk such an experience you had. What a nightmare for any professional!