This problem occurs about 10 minutes after the program starts. CPU costs 300%. What's the problem? stackoverflow doesn't support .svg image. Please download the .svg file uploaded to github.
You are jammed in runtime (see https://godoc.org/runtime) presumably because of poor choices in the com/smdduck/xsys/xcron/NewRateLimiter
But no idea what to recommend, as there is no source code
Voting to close as off-topic due to a lack of code to look at