UPDATE: In case anyone finds this thread. This was not an issue with Cloudflare. We still don’t know exactly what it was but with the update to 1.7 it stopped happening.
Calling all Cloudflare experts! 
We recently started using Cloudflare and so far it’s been pretty good except our users started complaining that the app was refreshing on them occasionally every few hours, and sometimes repeated times within a few minutes. We suspect the browser cache setting as we had it on 4 hours (which seems reasonable - the default value) and when we changed it to 8 days the problem disappeared… until today about 6 days after we changed the setting. Setting the browser cache so high doesn’t seem like the right solution. Do any of you know of what specific cloudflare->meteor interaction that might be causing this? We’re hosting on Galaxy.
Most things in our setup are default, standard caching level etc.
All help appreciated