Well yes and no. No since there is still plenty of available bandwidth on the port. Yes as the CCR2116-12G-4S+ has a Marvell 98DX3255 switch chip with plenty of features including L3 Hardware Offloading.
By the way you may get some inspiration from Edge Router & BNG Optimisation Guide for ISPs and the related thread How to: Edge router and BNG optimization for ISPs here on the forum.