I have created a movement system for a pawn that is possessable by my 3rd person character and I’ve entered all the inputs for my IMC. I wanted to add some realism with the movement and added some Finterp functions to speed and rotation but none of the interpolation is working.
Is there something wrong with my blueprint?
You should do it the other way around.
With your MoveForward/Backward action you should simply cache the movement multiplier (+1 for forward, -1 for backward, 0 for no input) and with the Left/Right action you do the same but a rotation multiplier (+1 for right, -1 for left, 0 for no input)
In Event Tick, you then can perform the actual movement using these two movement & rotation multipliers .
Compute a location and rotation offset with the corresponding multipliers, multiply it by delta time and with some movement speed / rotation speed values (or interpolate).
And finally apply both offsets to the pawn.
Optionally use sub-stepping.
Meaning you execute your movement logic multiple times per Tick to have a more consistent movement. (Also don’t forget to sub-step your delta time)