Asus RT-AC3200 keeps dropping WAN under torrent load?

I keep having issues with my Asus RT-AC3200 and torrent traffic.. After I configured uTorrent on my server and keeps downloading and seeding some larger files (5 active downloads) it keeps freezing on me forcing me to manually reboot the router in order to get my Internet connection back on. Having been using Merlin 378.55, I even tried with the latest official BETA one from Asus bit it's the same issue with both.. I can't remember the last time I had a router that kept locking up under some...

Asus RT-AC3200 keeps dropping WAN under torrent load?