Hello!
I am wondering how could I set interpolation between two values with duration, instead of the default “speed”. The speed is very vague, and I don’t have much idea about it’s timing.
Here is seen that I am using different “function” for different cases, and setting it’s position thorugh finterp constant - though as I said, I have no cloe if I want the transition to be one second, how to set it with the speed correctly:
Hey again 
The interp nodes are intended to be a constant interpolation on Tick, not having a start and end really. That’s why there’s no specified timing.
Timelines with a specified curve or iTween Float From/To is the way to go for this use case:
iTween : Free, smooth, procedural object animation
easyCSV : Read data from any CSV and put them in an easy-to-access string map!
Runtime DataTable : Import and export game data to and from CSV or Google Sheets while your game is running!
Never mind, I used timers instead, and it’s much cleaner too. There I can set specific duration, and through mapping the range and clamping it, I get clean 0 - 1 alpha values, which I can then feed to Ease node. I have this in an actor component class, so I can pretty much have it anywhere to modify rotation of components - without using timelines or lerps. Screenshot if it helps anybody:
