Pausing when loading photos, videos or menus.

When I use a local connection 192.168...etc and port number, then the photos, videos and menus load fine. However, when I access through its domain then after 2 or so requests the photos, videos and menus take 30+ seconds to load. I use cloudflare and have not applied zero trust to this sub domain. Has this been seen before and is there something I can do to correct this behavior?