I use #define TIMER_DIVIDER (2) // Hardware timer clock divider To reply my issue you need to add some task, not only timer, in my case it tcp_server. xTaskCreate(tcp_server_task, "tcp_server", 4096, NULL, 1, NULL); And when it start to receive data through wi-fi i see unstable interrupts.

Hi, everyone. I have timer and 1 tcp server task. The problem is: https://sun9-west.userapi.com/sun9-53/s/v1/if2/9GNdqljKU3IhRaEbBrbmxfERS-DDALO6vcGOXiVDldKsHsmId4cvl-GTpy4diU1-uDdZvAT9WeAGy5Il6I4TIqhX.jpg?size=651x133&quality=96&type=album My timer interrupt code for debug is: static bool IRAM_ATTR...