I'm pretty sure our LCOs equipment here isn't the problem here, we have 1 GIG links from the ONU to their OLT, and they too probably have good link to the servers of RailWire. It is definitely the problem at RailWire servers, sometimes they are working great/good, sometimes bad and unstable.
But since two or so weeks everything has been working smooth and upload speed and Pings has been good. I'm not im my home anymore so can't comment the current situation but it was pretty good going before two or so weeks.