@Jorgen-Red-Owl#261761 There are several different instant payment networks. ING might send instant payments to other banks, but not to bunq.
See also: https://www.betaalvereniging.nl/betalingsverkeer/instant-payments/deelnemende-banken-instant-payments/ As you can see, both bunq and ING are connected to the TIPS network. But ING is currently only accepting incoming instant payments on the TIPS network. For outgoing instant payments, ING is actually only supporting Worldline, which bunq is not connected to.
Would be great if ING starts sending outgoing instant transfers to bunq soon, but as of right now they aren't doing it. Your best course of action is to use the iDEAL top-up feature at bunq / send payment requests via bunq.me to let other people pay you via iDEAL directly. That way you're not depending on ING.