Having used the previous LogiOptions and hated it, the newer Logi Options + is a big improvement. HOWEVER.., having assigned various key functions to my MX Master 3 mouse for use in Photoshop I notice that the horizontal scroll still does not work. This is a huge deal breaker for me, it's one of the reasons I chose this mouse. If I cannot get this working the mouse will be going back. I paid a lot of money for this mouse and expected it to work right out of the box and yet so far today I've spent 4 plus hours trying to get even the basics to work correctly. Feeling somewhat deflated after making this purchase, sadly! :(