This crash has been in TTT forever and now it's being widely abused. Until the magneto stick is entirely redone or the cause of the crashes are found, this should be disabled by default
TTT: Disable weapon picking up
If Facepunch/garrysmod-requests#424 were implemeneted, the magneto stick could be properly made. You could easily make the magneto stick as reliable as the gravity gun.
nudge nudge rubat