Default-Speed 0.3x instead of 0.25x (slow-motion)

For slow-motion in my badminton streams, I always use 0.3x speed instead of 0.25x.
Is it possible to set 0.3x as the default option in the usersettings, either instead of (or in addition to) 0.25x?

Which filter do you use for slow motion? You can usually save a preset instead of manually typing but depends on filter.

I do not take filters for it, cause i change the speed in the properties of cutted clips.

I can add 0.3, but someone else will say it should be 0.333 because that is effectively 1/3. It is impossible to make it a default; that simply does not make any sense. Is 0.333 OK?

Thank you very much for the help.
0.333x is (for me) not as good than 0.3x, but maybe better than 0.25x.

Oooh, there’s a drop down there… I never noticed.

You can just type anything there.
You can even quickly copy paste 0.3 it if you need to do it for many clips.