rt-ac88u + synology ds 415+ link bonding

hi guys

have the above setup and has enabled link bonding in the 88u and setup bonding in the 415+ but im not seeing any extra throughput

have 1 ethernet connected comp that can download at 117 MB/s

if i start a second download on a different ethernet connected comp of the same file the first slows to about 70 MB/s and the second 40MB/s

so its apparent the bonding isnt working

the 415+ is set for

IEEE 802.3ad dynamic link aggregation

see...

rt-ac88u + synology ds 415+ link bonding