I don't think it is anything to do with the app_info.xml file: sounds more like BOINC long-term debt, aka 'ATI work fetch priority'.

A subject Richard and others have been trying without much success to get UCB to take seriously ...

There are two other ways to "sometimes" get BOINC back in battery... one is individual project resets to clear the debts and the other is to use the flag in CC Config to clear the debts...

Obviously, if you are going to use the project reset method, wait until you run dry next time and then reset the project and that will reset the debts for that single project ... with multi-project interaction the generalized debt reset is sometimes the only way to get BOINC to behave again ...

Note that in my personal experience you can start seeing the artifacts of the "debt crisis" in as little as a week though most of the time it is tolerable for up to a month ...