Many syncId requests

Hello
During creation of UI (when user enters web-app) after downloading all js, css, png files there is about following 100 (sometimes even ~500) xhr’s:

Reqeust: {csrfToken: “58c9aff9-bb91-4525-9dbf-d7efd9e65556”, rpc: , syncId: 221}
Response: for(; ;[{“syncId”: 222, “changes” :
, “state”:{}, “types”:{}, “hierarchy”:{}, “rpc” : , “meta” : {}, “resources” : {}, “timings”:[4538, 0]
}]

with different syncIds and timings. Do you have idea why there are so many of those? I’m using version 7.4.6.

Anna.