3. It will be optimal to use a shock drill to drill ceramic tiles, not a perforator. The perforator is not recommended due to high impact power to avoid tile exfoliation due to strong vibration. At the beginning of the work, the shock drill will need to be transferred into a drilling mode without a blow until the thickness of the tile itself is passed. And then you can already transfer to the «rotation with a blow» and bring the hole to the required depth.