I'm not sure if anyone has experienced this, when I upgraded to the new build (384.3) working flawlessly for about two days then strange things started to occur from;
- Slow, laggy GUI - When logging into the router
- NAT errors occurring when UPNP was enabled - Breaking all port forwarding regardless if it was on or off and breaking the internet effectively no internet whatsoever if UPNP was enabled.
So, rather than be a hindrance I reset the NVRAM once again, then again using the WPS button then re-flash 384.3 build, setup once again working.. Then it would break again after about 24 hours of testing.
Before these problems, I was on 380.69_2 which ran sweet as a nut so, I decided to flash back, obviously clearing and resetting the NVRAM from 384.3 - boot into recovery mode then use the Asus FW Restore utility, uploaded then the programme reported that it couldn't be flashed - so OK, so reset, still on 384.3 managed to flash the previous FW through the GUI, no problems, back to 380.69_2, setup all my information, WiFi etc, then had to reboot, would you believe constant soft boot loop, so my testimonial is that 384.3 is buggy and breaks everything even if you're on a previous build, build 380.69_2 was working flawlessly, UPNP etc.
So, in the end I flashed and cleared NVRAM 384.3 and flashed 384.4 alpha build, been running 48 hours without a glitch touched wood. I might add this is all on a RT-AC3200 - Unless
@RMerlin can correct me on something on why UPNP breaks everything in 384.3 then I can speak from my testimonial and maybe other users whom are running the 384.3 have no problems or can replicate this issue, all I know from experience 384.3 is somewhat borked.