HTTPd performance issues

Hi Gents,
I am trying to get Mongoose HTTPd working properly with 2 interfaces. I have LWIP setup with Ethernet as interface 0 and a WINC1500 wifi module as interface 1.

Mongoose seems to be dog slow at getting reply packets buffered to transmit. I’m calling mg_mgr_poll(&mgr, 1000); But I am unsure if there is anything else that needs to be done to properly service 2 interfaces with Mongoose.