Nous A1Z DDF causes high CPU

It can.
I use bigger value on my side.

Another user have do same here DDF: Add support for all current NEO smart plugs with metering (TS011F) by iisworks · Pull Request #6474 · dresden-elektronik/deconz-rest-plugin · GitHub

Will make a PR for that, added here DDF add support for some tuya device by Smanar · Pull Request #6244 · dresden-elektronik/deconz-rest-plugin · GitHub