Hi, I'm finding the smart top-up feature is not working. My S5 paused and returned to dock at 20%. Despite only having about a 7 square metre space to finish cleaning the S5 had to recharge to 80% before it would continue to clean the 7 square metres. Using the latest Roborock App. Firmware latest update 01.08.62. S5 just a week old. Please help?