Actually, there is something wrong with archers in general.

All bow, when shooting with light shot, will get a random "remainder timer" on light shot.

Verdant bow changes between 3 and 2 seconds till we are able to re-shoot.
Crab Bow changes between 4 and 3 seconds.

Etc..

Archers need some fixed it seems.

Confirmed with several Linkshell members.