Slow SMB speeds but max UPnP/DLNA speeds between Windows 10 & Infuse 7 on ATV 4K 2nd Gen

I know this has been asked many times over time but I’m not able to get any solutions for this yet. I get max speeds over UPnP/DLNA like 350-400Mbps but only 50-75Mbps with SMB. Tried Legacy mode and the speed only increases to 65-75Mbps from 50Mbps. Both SMB1 and SMB2 is enabled on PC.

My router is R7800 and a Laptop with AX200 Wifi card. Both ATV and PC is connected to 5Ghz and the link speed is ~866Mbps and ~845Mbps on ATV. Most of the high bitrate movies buffers many times while streaming.

Are you streaming from laptop to Apple TV? Try connecting them both to Ethernet and see what speeds you get. Even if you can get link speeds that fast it doesn’t mean you can stream a movie that fast.

Also note you will lose much of the benefits of the Library function with UPnP/DLNA connections.

Why are you concerned with speeds? Are you having playback problems? If so with what type of file?

Did you try setting the SMB on the saved share advanced settings in Infuse to SMB2 instead of legacy?

Yeah that is why I switched to SMB but its slow

Yeah. Some higher bitrate movies like 4K HEVC files and some 1080p files buffers in the middle of the streaming.

I have tried all. The speed only jumps to 10-15Mbps with different each settings. That’s it and no much improvements.

Although UPnP/DLNA speeds are just fine. Pretty weird

Did you try changing the “Streaming Cache” in the Infuse settings under playback to “Legacy” instead of Auto? This is different from the SMB related settings.

Yes already tried that many times back and forth!

You know how to trace data through ETW like this? Slow SMB/CIFS performance - Microsoft Q&A

I had this issue for a long time. :frowning:

You still have this issue?