I've so far experienced this with every version of 2020.1 beta on my machine. Loading up the Editor takes over a minute. I save a script? 30 seconds until I can start clicking anything. Clicking the play button? 25 second wait. I try to build the project? Can't as every single time I open the Build settings tab I get stuck in a never ending loop of GUIView.RepaintAll.PlayerLoopController. Every. Single. Time. I have no idea what is causing the long load times. Has anyone experienced anything like this? I recently downloaded the 2020.1 specific Newtonsoft.Json package, and it's currently the only reason I am using this beta.