Mercusys MR70X, it's very cheap in PL (someone was selling a new one for 110PLN
at Allegro, the other day), or perhaps the AX Xiaomis.
At 400mbps, you could probably even settle for an AC2600 device.
(the Mercusys isn't part of the list below, because of Add new brand Mercusys to ToH)
Supported AX devices - https://openwrt.org/toh/views/toh_available_16128_ax-wifi