MPC-HC jump Backward using keys (edited)

Can someone please help to fix the jump Backward using keys?
Settings:
Keys
Jump Forward (small) = Ctrl + Right Arrow
Jump Backward (small) = Ctrl + Left Arrow
Tweaks
Jump small = 500
Steps to replicate:
If I keep pressed Ctrl+Right Arrow, each frame is displayed. Like playing slowly.
If I keep pressed Ctrl+Left Arrow, the frames are not displayed. After I release Arrow key the video jumps at the last frame (not displaying the intermediate frames).

I want to have displayed each frame also for jump Backward.

Thank you

Options > Player > Keys

If it is red, you assigned two commands which is wrong. Ctrl+Arrow is used for framestepping by default.

Now I learn this. Thank you.

The problem becomes:
Frame-step back it's not fluid when keeping pressed Ctrl+Left Arrow.
After I release Arrow key the video is displaying the last frame.

Backwards framestepping is not possible. It works like an ordinary seek. And if you issue seek actions faster than things can be processed, then it will not be smooth.

It works the way it works, and no improvements will be made, nor are possible.