How to increase buffer when playing via ffplay?

Question

Nginx

There is an NGINX server on the transmitting side assembled with an RTMP module that transmits a stream encoded in HE_AAC. When playing through ffplay, the buffer size is about 8-9 kb / s. Using -infbuf increases to 36-37 kb/s. How to increase the buffer size to prevent broadcast breaks in case of network problems? The delay is not critical.