hah, found it faster than expected. The thread is from june 2023, but i doubt a lot would have changed mechanically. Its a giant thread, as you can imagine people heavily discussed about tempering back then, when there was no scroll of restoration, so you might have to dig arround in it a little ^^
Oh, of course we also cant prove the accuracy of his test - however, considering that he did appear to put quite some work into it, id say its safe to trust.