TomatoUSB

Recently installed it, connected new 3TB external drive to it, wanted to make a small seedbox.
Now it just keeps rebooting or something, when I ping it it looks like that
Reply from 192.168.1.1: bytes=32 time<1ms TTL=64
Reply from 192.168.1.1: bytes=32 time=2ms TTL=64
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.1.45: Destination host unreachable.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.

Then, about 5-6 minutes later it comes back to life, then the cycle repeats after a few hours. Sometimes only transmission would hang and I could not use the remote gui, I'd go to the nas-bittorrent.asp, untick "enable bt client", save it, and tick it back and save it again.
It is seeding about 80 torrents not more than 500MB each, there is always a lot of free memory.
Help would be appreciated.

I've disabled transmission, samba, disconnected the hdd and still have these problems. Made sure that the daemons did not run via SSH, they did not.
Had 2 router comas for the last 12 hours. Any advice?

could not fix it, it started acting really weird, sometime ping to it would take about 2000ms for 5-10 minutes. flashed merlin, so far so good