What is Lerp-ing?

So today, courtesy of Brent “Brentmeister” Randall's post on Riot Games blog, I learned that Lerp-ing is the nickname for "Linear Interpolation between two points".

Riot Games' engineers, by reducing the number of server-side frames to store for shot hit checking and Lerp-ing between them when they need to evaluate a hit/miss, greatly reduced the cpu cost of their animation work as part of the overall work which drove up the games-per-cpu number for their VALORANT platform.

There's a lot of other cool stuff on that post which make fascinating reading of you're interested in performance optimisation!