Start conservative — lower FOV, higher smoothness
There is no magic number that guarantees safety, but conservative settings survive longer. Most staff recommendations start around a narrow FOV band and smoothness high enough that crosshair movement looks like tracking, not snapping. If spectators can see your crosshair teleport, you are already past what NetEase Anti-Cheat and human review tolerate.
Use separate profiles for rifles and crossbows. A sniper flick profile should not be the same as a crossbow tracking profile. Once Human Cheats supports per-weapon slots — use them instead of one global rage config.