For games against AI, I recommend setting the Pop Cap too either 125 or 250. So not only is the AI not going to spam a lot of units, but to ensure you have a fun time as well
A new way that was reccently found is to set the Sound Quality to low in the Options Menu. It will make units sound less clear aswell as impact the overall effects but it will result in a more stable game!
Confirmed, the bug with high zoom cutting the upper edge of the screen can be solved selecting Imagem details on Maximum. You can leave every other graphic settings on low.