R7800 Firmware Bug

I also experienced where the names of my "Attached Devices" were erased with V1.0.2.52. I also experienced disconnects every 15-20 minutes with that version. I did a factory reset as suggested by Avtella. The disconnects disappeared but I had horrible download speeds, somewhere in the range of 10-12 Mbps even after I manually configured the router to it's previous settings. Nothing I did in the past 2 days helped the speed, even called my serice provider to run a diagnostic on my cable line. Downgraded back to V1.0.2.46, did a factory reset, reconfigured the router and was back to normal. Download speeds now back to 233-236 Mbps as before. I have the 200 Mbps Plan. Never did figure out what the problem was in V1.0.2.52 but I know for sure that it is buggy for my R7800. I always install the newest version of firmware on the router as I feel my system is more secure but I'll have to wait for the next upgrade because this latest one is not fully campatible with my R7800.