Esphome display incorrect refresh time


i use a Waveshare 4.2 epaper. Works good, but the refesh time is not correct. the display refreshed every 60s, but in my config i have:

  - platform: waveshare_epaper
    id: epaperdisplay
    cs_pin: 15
    dc_pin: 12
    update_interval: 180s
    busy_pin: 16
    reset_pin: 4
    model: 4.20in

Do you need to change full_update_every too?