refresh after site edit very slo

Hi,

My website: is built on Genesis with a non-StudioPress child theme and it woks well enuf for the past 10 months or so. Recently I’ve noticed an issue with refreshing after editing information in the Header and sometimes the sidebar. I always work in Safari, and I have Quick Cache as my site cache plugin. Now about 2 months ago, Quick Cache made some change in service and I frankly don’t know if this is connected or not. For example, right now I can open my Dashboard and view the site and my edited changes appear as I want them, but when I logout, the changes are not visible. A hard refresh does nothing and sometimes the cache-cleaning feature of Safari also doesn’t work. But, given enough time 1-2 days and the changes appear.

It’s very confusing as I constructed the site throughout ’13 and never had the issue until recently. I do live in Tokyo and my service is very fast and I just don’t know how to fix this issue. Any ideas to toss my way? Change cache plugin…maybe?

Thanx, Tom