I currently own an Asus ac87u with the Asuswrt-Merlin version 380.61 with a 5tb usb hard drive attached via usb 3.0. I also run the Astrill vpn service off the router. Okay to the issue, when I do back up to the usb hard drive using the Acronis software the router seems to go down where I have to reset it. I think it is overheating because the temperature read 49 c on 2.4ghz, 68 c on 5ghz and 82 c on the cpu on normal use without Acronis doing a back to the usb hardrive. The cpu being at 82 c seems kind of high and doing the back up with Acronis software makes me think it is the straw that breaks the camel's back. Thank you for your time and help.