At which URL did you encounter the problem?

https://finto.fi/yso/en/page/p28785

What steps will reproduce the problem?

1. Load the page with the network inspector open
2. The page content loads in a reasonable time, but the hierarchy takes a long time to open
3. This is shown in the network inspector as the time to finish, for example:

• Chrome: Finish: 5.75 s DOMContentLoaded: 551 ms Load: 5.67 s
• Firefox: Finish: 7.06 s DOMContentLoaded: 583 ms load: 1.01 s
• Edge: Finish: 9.97 s DOMContentLoaded: 691 ms Load: 9.78 s
  (Firefox seems to interpret load time differently to Chrome and Edge)

What is the expected output? What do you see instead?

This lag time seems to be consistent to certain concept pages. My initial hunch was that this would be proportional to the depth of the concept in the hierarchy tree, but that doesn't seem to be the case. Something like https://finto.fi/yso/en/page/p7873 has more than double the hierarchy depth while keeping the time to finish much shorter.

What browser did you use? (eg. Firefox, Chrome, Safari, Internet explorer)

Firefox, Chrome & Edge