I hope this helps:
I had the same problem.
I had DSL and Belkin crap router…
THEN I switched to COMCAST and my DIR-655
I left everything default. I solved the problem by calling COMCAST about a billion times and having the guy check the lines.
Come to find out that the cable line going into the house already had a weak ass signal. After weeks of calling and complaining, they finally put a new tap on the pole and one dedicated line into my house.
You need to ask them to check:
- Signal strentgh into the house.
- You need a “homerun” line going into the house, preferably straight into the cable modem.
- Patience to keep calling them and complaining directly to a supervisor.
It is NOT your DIR-655, I have not changed the settings or upgraded the firmware since I had it. I have had good results from the DIR-655 after the cable signal problem was fixed. I never get dropped and have a very stable connection.
disclaimer: I’m not a networking expert, so I didnt fool around with the NAT settings or DMZ or anything…just installed it. If it’s not your cable signal strength, I dont know what it is, just trying to help.