Win10 9879 preview version of the CPU is too high how to deal with?

When using Win10 Build 9879, I found that the program does not run immediately and the CPU usage is high. Isn't this a weird thing? In fact, CPU usage is high, in addition to the third-party software that is running, there are other reasons, such as services, system settings, and so on. How to solve the high CPU usage of Win10 9879?
First, disable DiagTrack Diagnostics Tracking Service service
DiagTrack Diagnostics Tracking Service service tracking diagnostic service, will collect system information while we use the system, but for ordinary users It’s really useless to say that it’s just a collection tool from Microsoft.
Operation method:
1, press WIN+R to call out the operation, enter services.msc to enter;
2, find the DiagTrack Diagnostics Tracking Service in the local service, double-click to open the settings, stop the service and Set the startup type to "Disable";

Second, close the synchronization settings
CPU, also called the central processor, is the computer's computing core and control core, able to process data, instructions and so on. How to check the CPU usage? Open the resource manager.