Same here. My battery drains overnight. Slow system startup with ui lagging. Safari can't play full HD video stream... Rolled back to Catalina two months ago and all was fine till today. But today i had got the same except ui lagging on Catalina.... (Recently i had Catalina upgrade) Model Name: MacBook Pro(2018) Model Identifier: MacBookPro15,1 Processor Name: 6-Core Intel Core i7 (2.2 GHz) Memory: 16 GB (2400 MHz DDR4) Chipset Model: Intel UHD Graphics 630, Radeon Pro 555X Battery: Service Recommended (first saw it today)