When I use the chainsword on one of my low end devices that lags a lot, which is my chromebook, I try fighting with it but it does not hit people in front of me, but in fact always hit people behind me. For the 1st 2 swings, it deals no damage to the person in front of me, but it does hit the person after I do the third swing (uppercut looking swing). When I changed devices the problem disappeared. Using other light weapons on the chromebook works perfectly fine except when I use the chainsword. (Crossroads is on chromebook and Spooky crossroads is on a different device)
Solution
Chainsword's hitbox is buggy af, because for me it sometimes it hits people so far its like it has dragon slayer range and sometimes it just doesnt hit even if it clearly touches the victim and this is on 60 FPS so i guess its because your fps is too low, the phone you are using is probably stronger than that shitbox anyway