<b>Chrome Version       : <Copy from: 'about:version'></b>
URLs (if applicable) :
Other browsers tested:
  Add OK or FAIL, along with the version, after other browsers where you
have tested this issue:
     Safari:
    Firefox:
       Edge:

What steps will reproduce the problem?
(1) too slow
(2)
(3)

What is the expected result?
page must be responsive

What happens instead?
page is too slow

Please provide any additional information below. Attach a screenshot if
possible.