Still unusable.
Update : I tried reinstalling winsock but there is no change. Issue still persists. After all this, there is definitely nothing wrong with the router but there's an unknown issue with the way my laptop receives network infomation. My D-Link router required no firmware updates. Neither did my laptop's network adapters. There was no messing with the registry until just now and still, nothing changed. I tried reinstalling my network adapters then immediately troubleshooting to see if anything could be picked up. But as usual, there is no change.