I have pulseway 9.9 running on 100+ solar-powered Raspberry Pi B+ (Raspbian Buster). They have been running smoothly for over a year, however within the last month on approx. 30 of them, CPU utilisation has increased from 5%-10% to 95%-100%. Stopping pulseway stops the issue and starting again resumes it.

How to go about diagnosing problem?

Hey Jason, 

Thanks for reaching out, I've raised a support ticket on your behalf. 

Someone should reach out shortly to help you out.