Even on low scalability settings, with hardware you have editor is potentially going to continue to slow down during heavy activities such as using landscapes or rendering lighting. There isn’t much more that you can do in editor to increase speed and, because hardware you are using is below our minimum recommended specs, we cannot guarantee that editor will run or run smoothly on your machine. You can find those specs here: Linux Game Development in Unreal Engine | Unreal Engine 5.1 Documentation