We use Google UAC to promote mobile games. There are no additional options to tune campaigns except GEO, Budget, Bid, and Strategy. The optimization itself tends to find a balance between Budget and Bid when you target some GEO, and replacement of assets which have bad KPI. Moreover, for assets, Google UAC provides special marks like "Best", "Good" and "Low". Don't pay attention to them when you are going to replace assets. Those indicators currently are incorrect.