I'm an Xbox Series X user, and one of the optimization issues that really breaks my immersion and is annoying is the lack of fluidity due to the FPS drop when using 3D sights, both on vanilla and modded servers. Using long-range sights becomes frustrating in firefights because the FPS simply drops to around 10 when aiming with this type of sight. While I know there's the option to use 2D sights, I think implementing optimized 3D sights would be excellent. I've included a video of a GM match to demonstrate this, although in combat the FPS drops even further, reaching as low as 20, which is a horrible experience.