I've tried disabling Fast Open and it makes no difference.
HTTP content tends to load very fast though. When a page fails to load completely, the error usually is: Once connected, the video plays fine unless the internet drops. For some content (usually video content) I have to reload the page a few times and it will finally connect. When loading an https page, Chrome tends to say 'Establishing Secure Connection' for quite a while and many times parts of the page are very slow to load or do not load. This is a combination of 2 issues actually.