Streamyx upload speed was never "unusually slow". It has always been slow. Yes, 0.5 megabytes per second upload speed is slow for streaming.

I used to have Streamyx 4mbps, and my upload speed never went higher than 130 kilobytes per second. Good luck streaming with this.

In 2012, I had 10mbps Unifi, and my upload speed was 16mbps and could easily stream 1080p games from my computer.

By streaming, I meant broadcasting. My apologies for the confusion.

512 kbps is KILOBITS per second. Divide 512 by 8 (8 bits to 1 byte) and you get your theoretical upload speed of 64 KILOBYTES per second. Uploading one hi-res 8-megabyte JPG to Facebook at 64 kilobytes per second would take 128 seconds, theoretically. This means that an upload speed of 512 kilobits per second is just not enough for broadcasting.

Yes, I do broadcasting through Twitch.TV, and if I remember correctly, using my Xsplit Broadcasting software, a 720p stream at 30 frames per second and maximum quality requires an upload speed of at least 400 KILOBYTES (not KILOBITS) per second.

I suddenly remembered the Philippine Pro-Gaming League (PPGL) stream, in early 2012. It was held in a mall that is owned by the Ayala Corporation, which also owns Globe Telecom, which I think is the #3 or #4 ISP in the Philippines. Globe Telecom loaned their first Gigaline (1 Gbps) to the PPGL, and the organizers were raving ahead of the event that they will be able to provide a 720p stream. Obviously the organizers were mistaken, as the Gigaline's 1Gbps is downstream, as opposed to upstream. They were only able to provide a 240p stream because the Gigaline's upload speed is only a maximum 192 kilobytes per second. To make matters worse, the SC2 event was marred by lagspikes and a few disconnects. MarineKingPrime won that event I think. And the organizer of the event, the president of the Azkals Progaming Team, went into hiding after having incurred millions of pesos in debt.