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 ...