Hello guys, I have tried to host Plex, Jellyfin, Emby all of them but somehow the video buffers and lags when more than 2 people watch this. I am trying to understand whether my current setup can run this, specifically if CPU can handle it or I need a GPU here.

Current Server Specifications: Dell Poweredge R720 CPU: 2x Intel Xeon E5-2667 v2 RAM - 344GB DDR3 OS - Proxmox GPU - None

I have tried all the 3 media servers and mostly Emby was very efficient and was able to handle 3 simultaneous 1080p streams. But both plex and jellyfin at most could handle 2 streams. I don't have much idea on Transcoding as well. I saw that ZimaBoard and even small SingleBoard PCs can run media server. I wanted to understand what I am doing wrong here with these specs. I usually enable Transcoding and leave it. Also, I ran all of these in Docker with Intel QuickSync selected in Transcoding menu.

Thanks for any suggestions :)