Klaviyo editor painfully slow, constant crashing, am I missing something?

Klaviyo has always been somewhat slow, clunky and painful to use but today it’s unbearable, I’ve had to walk away from the computer several times before I forced to launch it out of the window.

I’m trying to do the simplest task of adding links to a selection of static images in a table and every time I come back to the editor (from another tab where I’m retrieving the links) it either completely freezes, crashes the browser, or is so slow I don’t know what it will do next.

I’ve cleared my caches, tried another browser, toggled content blockers, the works. Still the same.

Am I missing something?

I need Klaviyo for work and right I’m wasting time troubleshooting instead of actually working.