I did a lot of test today:
My AV network is the following:
For DLNA Play and For Devialet AIR
MC DLNA SERVER (Windows 10, separate room 36 TB Disk Space)->Switch (Linksys)-> Ethernet->D220 Pro | DLNA
MC SERVER (Windows 10, separate room 36 TB Disk Space)->Switch (Linksys)->Media Renderer (MC Client, Windows 10)->Ethernet->D220 Pro | AIR
- The switch is not directly connected to a router, it is connected to a WLAN Bridge (AVM 1750E).
- Network topology: Internet->Cable->Cable Router (Old Fritz!Box with WLAN off)->Lan Bridge (AVM 1750E, Home Office)->WLAN Bridge (AVM 1750E, Living Room).
1. I directly connect the router to the switch -> stuttering as before
2. I copied some album's locally to my media renderer (intel m.2 ssd, i3-6100, 8 GB RAM) and use the media renderer as DLNA server; MR->SWITCH->D200 Pro. It's less stuttering but in no way perfect.
Does the MC DLNA Server load the file into memory or how does it work? In the beginning it takes seconds before playback starts. Also the used ethernet bandwith is sometime 24 Mbit/sec! For playing a 24 bit/96 kHz file!