How to increase the playback speed in 5% steps in MPC-HC?

I would like to increase the playback speed of videos and audios in 5% steps in MPC-HC, using a keyboard key. It's possible?

In the MPC-HC that I use here (v. 1.9.23.10), I can only increase the speed in steps in prefixed values of 1.25x, 2x, 4x and 8x. I would like to increase the playback speed in 5% steps, following the values of 1.05x, 1.1x, 1.15x, 1.2x, 1.25x, 1.3x, 1.35x and so on, using a keyboard key.

And I can only set the value to 1.1x if I access the menu with the mouse cursor (I can't set this value of 1.1x using a keyboard key). Using the keyboard key to increase the playback speed, I only get the prefixed values of 2x, 4x and 8x.

I corrected the final part of the 1st post to:

Using the keyboard key to increase the playback speed, I only get the prefixed values of 2x, 4x and 8x.

Options > playback > Speed step

Thank you.

Myabe users should be allowed to define their own speeds to add up to that menu availalbe under

Play > Playback Rate

?

Such ability will not be added.