It would be great to have an option to hide the Spectral Arrow’s glowing effect in the game. This effect can lower the frames per second (FPS) when many players are nearby and have this effect on.

You can see this FPS drop yourself. Just join a server with the PVP Manager plugin (which is popular in most survival servers today), and go into the PVP arena with PVP turned on. The plugin gives players in PVP the Spectral Arrow effect. So, when there are a lot of players, it can really slow down the frame rate.