Try the following, if you haven't yet:
In FAHControl, go to Configure -> Expert, and there add an option with name
advanced, then save.
When scientists release batches of work, it gets fed into one of several separate queues:Ok, will do, what does that do?
First, there are different queues for different FahCore types: Currently that's the CPU cores A7 and A8, and the GPU core 22. You can see work availability per each core at https://apps.foldingathome.org/serverstats.
Second, there are presumably three queues per each core: The normal queue, the "advanced" queue, and the "beta" queue. A given new work batch is going into only one of these queues — presumably based on how stable the admins consider the work batch. There is no distinction of these queues at serverstats. (Edit: There is a distinction of the beta queue, but no distinction between normal and advanced queue.) But the work release announcements at foldingforum often, but not always, say whether a batch was sent to "ADVANCED" or short "ADV". Perhaps "released to FAH" means released to the normal queue. I don't know how beta releases are handled, could be in a separate forum which his hidden from visitors without login.
By default, a client receives work only from the normal queue. An "advanced" client receives work from the normal and the advanced queue. A "beta" client receives work from the beta, advanced, and normal queue.
Users are asked to set clients to "beta" only if they actively participate in the beta testing program. This requires, among else, a foldingforum account, and readiness to submit proper error reports for troubleshooting. In contrast, I am not aware of any requirement on users who set clients to "advanced".
This is all merely hearsay, plus my interpretations and assumptions. I am not aware of proper official documentation of all this anywhere at the F@H web site.
Edit: Summary –
Setting the special option "client-type" = "advanced" should increase the chances of the F@h client to receive work during times when its work requests are not fulfilled by the F@h work servers. The background is that scientists sometimes release new work batches exclusively at the "advanced" level, instead of making it available to the normal level.