Merlin has started to take a really long time to load in Chrome with the new UI.
I have a fresh Chrome install with only 2 extensions, but loading getmerlin.in/chat takes 20 seconds or so. This is on a high-end laptop. It loads the page, then reloads it, then takes a long time to generate it fully before you can interact with it.
Also, there is no way to permanently close off the "rewards tasks" (which I also didn't get any rewards from completing), which I am sure don't help.