I followed the 'Plus 5' rule for wireless charging, and it fixed my iPhone's charge speeds

ZDNET explains why wireless chargers may charge slowly and how to improve performance: use the cables and adapter rated for the charger, follow a “plus five” rule (use an adapter that provides ~5W more than the charger's max), consider at least a 20W USB-C adapter for iPhone fast charging, and avoid sharing wattage across multiple devices; the piece also recommends GaN chargers and keeping a dedicated adapter for wireless charging.