If you are having the problem of not being able to see other players projectiles and every time you ask for help you are accused of hacking fear not! Many users in the community have had the same issue! And I have recently found the fix for this annoying bug.
Step one, bring up your chat using your designated hotkey. Step two, you type in “decamenu” and then remove it from your chat box. Step three, go to settings (once again by pressing your designated hotkey or by pressing the wrench under your minimap in nexus) and go to the experimental settings. (If you can not see these repeat the first step)
Step for, make sure disable player projectiles is set to off! And that’s all you need to do so unless you really do/did hack or something that is all you needed to do!