I have a slingbox at friends in NY where the internet was just upgraded from 5mbps upload to 35mbps, I am in Israel with 12mbps download but my viewing (using mac browser or windows) streaming speed has not changed and is still 2-3 (mostly 2.5 mbps). Latency speeds show 15-300ms (usually around 200).
Effectively when checking the speed between these two points using speediest.net – US to israel the upload is 8mbps and the download from NY to Tel Aviv (where I am viewing) is 11.5mbps. Incidentally, the effective upload from NY to here was 1.5 when measured on speediest before the upgrade upload from 5 to 35mbps and is now 8mbps so I expected a drastic increase in streaming speed – that didn't happen.
The slingbox is set with port forwarding on the US side and from another issue I had to call (and pay..) sling support they said that they were seeing 12mbps streams in Cost Rica from this sling box (I though it only went up to 8…) so they would not be able to help me with streaming as the box is streaming just fine and 'suggested' I check the forums (I realized their support on this was very limited).
I am really quite a novice but I watch streaming video from sites in the US and the sling box exclusively so this is really important to me. From what I could gather there is the issue of MTU on the 'receiving side' effected by latency because of TCP returned packets (I may be getting this wrong) and I ran a test I found here for that pinging the US slingbox IP with 1492 -f -l and getting a result that the packet needs to be fragmented but DF set. I am not sure what that means or how I change the size of packets – I guess with my router?
I also read about getting the sling box to use UDP that way not waiting for TCP approvals? I read about deleting port forwarding in the router on the sending side or changing the port number on the sling box setting so that it does not match the forwarded port. Not sure if this is something I am supposed to do and if so, would it be the same changing the port number on the sling box without trying to mess with the sending router settings and deleting port forwarding?
Bottom line I really hope that this 2.5 mbps upload can be brought closer to the 8mbps that is the 'slowest part' of the path between the two points (the upload). I don't know what to do I would more than appreciate guidance. If to change the MTU please explain to what and how if to change the port on the slingbox if I need to cancel forwarding or not and if anything else can be done.