i'm from Era, but I'm posting here because I am unaware of any Era-specific bug report thread for WebGL.
Since the WebGL update I feel a large input delay for keyboard + mouse inputs, especially when they are sent at a high rate. To be specific, by input delay I mean there is a period of time between sending an input, such as pressing a key to move, and then seeing it being registered on screen.
There are no issues with my keyboard, mouse, browser, or computer, as I have tried 4 different machines (3 windows, 1 mac), different browsers (Chrome & Firefox), different internet connections, as well as various mice and keyboards. Although the input delay may exist across all servers, it is especially apparent on Era when changing directions very quickly with the keyboard and shooting fast with the mouse.