A simple resistor or capacitor is not a current limiter unless the current it delivers when shorted would be below the maximum the LEDs can handle. A resistor

A simple resistor or capacitor is not a current limiter unless the current it delivers when shorted would be below the maximum the LEDs can handle. A resistor as a current limiter only works reasonably on low wattage LEDs (ie your cheap 0815 plastic LED) and with a stable power supply. 220V grid voltage isn't stable and the LEDs aren't low power anymore. You need an active limiter that regulates the current that flows through the LEDs (or monitors the voltage across a shunt in series with all LEDs), otherwise you risk collective meltdown.