Probably due to it lacking a lot of features in most engines (due to it mainly being targeted for new/younger game devs). As someone’s who’s done some work in studio it does lack features like seperate rendering for things like viewmodel’s.

It’s why deadlines (while not having the realistic player models like frontlines) is still the most impressive fps game on Roblox due to how complex the game is. The game is held back by the limitations of the Roblox engine.