Same here. Takes forever to start empty project, with “scalable” setting. And when everything is loaded, it takes 5 seconds to click anything in the editor. Screen updates every 5-10 seconds for one frame. I have started several projects now in 5.3.2 and 5.4 or 5.4.1, and 5.4 is totally unusable. I emphasize that this happens even when opening a simple new blank project, and even after disabling all lumens and nanites from that empty project. Sticking with 5.3.2 until new Unreal Engines are usable.
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