The ABS-CBN channels use Akamai which is the best CDN. Akamai doesn't just have nodes in the country but they try to get nodes directly at every ISP, PLDT has their own nodes from them. HBO uses CloudFront which has a node in Manila at ip-converge which is owned by e-PLDT. Some other channels in my list like Disney and Fox News are also using cloudfront and don't have problems like that, which means it's HBO's fault for their origin server getting hammered. It's always best when I can use channels that have CDN links but most of the time it's not possible to find one.