It only helps to increase speed "Feed rate modifier"

[IgorObach]

Good afternoon, dear friends!
I've been using Smoothieware firmware for a very long time. But i have question.
Thank you very much for your project!

I use the MKS SBAСE V 1.3 board ( Smoothieware firmware)
I manage using Octoprint!

I really like everything, but I recently decided to increase the size of the printer. And now there is not enough speed.
I compensate for this with a "Feed rate modifier %". I enter 2000. And the speed is enough for me.
If you write F1000 or F10000 in the command, there is no difference.
But in general, up to F1000 the speed changes.

What parameter do I need to change in Config?
I increase the parameter because it seems to me that the MKS Sbase board cannot produce the required number of signals.
I'm using a Delta servo for moving.

Please tell me if it’s possible to add something to the settings somewhere so that the data is not lost every time after switching off.
Is it possible to save this value "Feed rate modifier %" in non-volatile memory or do I need to make some settings in the smoothie configuration file?
Thanks!