Like in the title, I would like to have the way RP is gained. Because as for now its too slow :/
I saw in the 0.92 changelog that its possible to change the way you get RP

I am unable to set that setting, because I dont see it in the game menu anywhere.
Please help?

Easiest way of doing is is to look in the folder "Running with rifles\media\packages\vanilla" for the file "rewards.xml".
Copy that to a new folder in "\media\overlays\your mod name here" and open it in notepad for editing.
If it's a fresh install and the overlays folder isn't there just create it.
It should be pretty clear what each one does.
Then when you start a new quick match click "Setup mods" and turn it on and then you are good to go.

Thank you, it works, and for the record
is for the AI kill.
is for the human player kill

Just verifying: this is about quick matches rather than campaign, or is it?

Campaign doesn't currently have a menu to enable mods, it will in the future, so you may need to either edit vanilla rewards.xml directly or edit the campaign settings at media\packages\vanilla\scripts\trackers\map_rotator_invasion.php, and look for $xp_multiplier = 0.27; and change it. 1.0 would make it similar as in quick matches.

Yes, for quick matches. Now it's just the way I like it.