I have a web application where I am including many embedded questions into iframes. This used to run very fast with 0.33 and before (sub-second). Since upgrading to 0.35.2, these now run many times slower. This decrease in speed is only experienced when rendered as an iframe, not in Metabase itself. Has anyone noticed this?
Without knowing more details it’s hard to say. You should look in your logs and browser console for clues to where it’s using more time.
Latest release is 0.35.3 - don’t think it fixes anything related to this, but fixes other issues.