As mentioned in this topic below, guests are seeing pages too much out of date. It may be fine for not very active forums but for busy forums, and especially those during a live event it has a negative effect for guests to see posts that are not in line with the live event - upto 15 minutes behind. And revisiting makes no difference, the posts don't get updated. This is why I always set guest page cache to 30 seconds, but now with that gone I have made similar changes to Cloudflare. Please do the same or give those using Cloud an option. It's one of two issues I have left with it, if this can be sorted I would be very close to joining.