InfluxDB on a Raspberry Pi

Seeing from the other thread that going back to the previous version has not fixed it then you need to find the real cause of the problem. If you are only writing to influx every 10 seconds then it should be using virtually no cpu at all. Since it is still running at over 100% then that means it is using a complete core. The cpu load you had previously (15%) sounds much more as it should be. Please look in the logs.