I have escaped momentarily from the Chinese firewall. In addition to blocking content, and some sites outright, it slows things down more than I had realized. My impression is that sites fall into a green-amber-red spectrum, where greens are passed through, reds are fully blocked, and ambers go through a filter that slows down access, sometimes to a crawl.
I will try to get some posting in while my access is unadulterated.
2 hours ago