Thanks, I tried it. I removed Logi Options+, G Hub, and all other mouse-related software. I installed the latest version of BetterTouchTool 6.0006 and loaded the preset you suggested.
Unfortunately, it works very poorly and cannot replace Logi Options or Mac Mouse Fix for me.
First, it is very hard to understand the huge number of settings, and many of them behave in non-obvious ways. For example, in your preset, mouse gestures are bound to the right mouse button. I could not find a way to rebind this to the side button on the MX Master 3S.
Second, gesture recognition and triggering have noticeable delay and animation. A red line is drawn and a HUD appears. When I try to disable the HUD and the delay, everything breaks and stops working.
In Logi Options+ and Mac Mouse Fix, this works much more natively and simply. Mouse gestures react instantly and accurately, and they are easy to bind to side buttons.
Logitech Mouse Configuration also works poorly. It looks like changing DPI does nothing. I also have two mice, MX Master 3S and G309, and I could not get them to behave consistently in BetterTouchTool. With this preset:
https://folivora.ai/releases/mx_master_example.bttpreset
the G309 behaves incorrectly, and I have no idea how to make both mice work properly together.
BetterTouchTool is clearly very powerful, but it is too complex for regular users. I am a software engineer, and even after an hour I still could not figure out how to configure everything.
I will have to go back to using Logi Options+, G Hub, and Mac Mouse Fix together. Surprisingly, this combination works much better for me than BetterTouchTool.