Waiting time to first Byte

Hi Team,

Hope you doing well.

We like to understand why there is so long wait time “Time to First Byte: 345 ms” for some of the media images.

Webtest Url: https://www.webpagetest.org/result/191107_QG_dbbf68178a5626dfd47377ec12ff9f51

Please share your recommendation or cause of the delay.

Regards,
Sanjeev Choudhuri