Rt-ac87u problems with buffering samba server

[Bigpete]

i have an ac87u for some time, and it has working flawlessy. I use both usb port with harddives connected, streaming to my Apple tv 4k. Got an 2tb and 4tb disk connected. Recently bought an 6tb and copying all my 4K movies over. But they all kept buffering constantly when playing through my Apple TV. Guessed it was to big, and then reconnected my 4tb and now I got the exactly same problem. Won’t play any 4K movies without constantly buffering every few seconds. And they worked perfectly before? Now my dad got the same problem with he’s ac68 router. If I connect the drive directly to my lg OLED 4K tv. It’s plays perfectly, but suddenly when streaming is buffering. Have tried with lan connected, exactly the problem. And my Apple TV says about 700-800 Mbit speed in ASUS GUI (5ghz)

 

[kneo]

Have the exact same problem with my AC68. I tried upnp and it worked a bit better on my wdtv

 

[Bigpete]

Have the exact same problem with my AC68. I tried upnp and it worked a bit better on my wdtv

Yeah but is funny that about a week ago, it worked fine with samba. What has happen to the USB ports on some Asus router