title: Long time init loads after upgrading angular to v13 (from v11)
body: <p>i have an app, i upgraded angular to v13.2.6 and all okay in the migration.</p>
  <p>I serve this app via SSR, and previously, the times loading the initial doc were sub-second, like this:</p>
  <p>v11 loading times</p>
  <p><a href="https://i.stack.imgur.com/nrxqk.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/nrxqk.png" alt="" /></a></p>
  <p>Now, after the migration, my webapp init loading is the following (for the init document):</p>
  <p>v13 loading times</p>
  <p><a href="https://i.stack.imgur.com/lPPeQ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/lPPeQ.png" alt="" /></a></p>
  <p>what could be causing this?</p>
  <p>I don't know what actual code to provide, since the code of my webapp is literally the same on both versions.</p>
  <p>edit: additionally, check that even the document itself (size) is lighter in v13 but the times are much much higher for some reason</p>
  <p>Thanks</p>
  <p>EDIT2: i forgot to add, this document is made by angular universal, so, maybe the problem is there? updated the tags.</p>