I’m not sure it’s exactly the same issue. As far as I can tell there are actually three separate Hue integration issues right now. Of course it’s entirely possible that a fix for one would fix the others as well, but they do three seem to have appeared at different times. Here’s the timeline as far as I can tell.
1) mid August. ST hub rebooting due to polling too many Hue devices. Platform change made a very significant change in how hue bulbs were polled. Essentially they went from updating status once every five minutes to once every five seconds. As soon as the platform change occurred, a number of people begin reporting that their smartthings hub would just reboot itself frequently. Removing the Hue bridge from the network would fix the problem.
After about a week of investigation, support determined that the problem is occurring for people with around 20 devices connected to the Hue bridge or more. Late in August they started a beta for a fix for that but it has not yet been released.
2) mid September, but possibly before the September 14 firmware update, some community members begin reporting seeing a significant delay in hue lights going on or off. No rebooting issues. It’s unclear whether this was associated with a recent hue bridge update or not. There were several platform hot fixes in September, and it’s also unclear if the problem was associated with any of those. The delay would occur even when using the native hue app. For some people, Powering off the SmartThings hub would remove the delay and powering it up again would bring the delay back. That’s this thread.
3) after the September 14 firmware update and the September 15 hot fix, A number of members reported that the network ID for their hue bridge was corrupted, causing multiple problems. There’s a workaround for that one which involves manually editing that hue bridge ID in the IDE, but this can result in your having what appeared to be two Hue bridges on the network and you may not be able to add any new bulbs to SmartThings after that. So it’s just a temporary workaround for total loss of control of the lights.
If you have any of these three problems, report them to support. I don’t know if they’re related or not.