Plex Remote buffers when connected to particular ISP but works fine with a different ISP

Okay let’s jump right into the issue.
I’ve been having this issue for quiet a while now but i kept ignoring it as i was the only one effected by it, but now almost all of my friends who share the same ISP as I are experiencing the same issue. Plex would only buffer with this ISP even though internet speed is high (500Mbps). I tried to change the port for the remote connection but still the issue persists.
I apologize if i haven’t explained the issue precisely.

Hi infinitlibrary1,

there is not a lot of detail to go on. Details which can be quite interesting are:

  1. Where is PMS? As in which ISP is it connected to and which upload speed does it have
  2. Where were your friends previously? (ISP, download speed)
  3. Where are you and your friends now? (ISP, download speed)

Because of Peerings, choosing a different ISP with the same speed will yield different speeds, or even worse, if another technology is used (coax-cable with better download speeds has siginificantly worse upload speeds than even DSL).

Super4Jet