Unresponsive due to characteristic issues

[zylky]

Homebridge becomes unresponsive at least once a day, log stuff below with link to https://github.com/homebridge/homebridge/wiki/Characteristic-Warnings.

[6/27/2021, 12:38:47 PM] [homebridge-platform-smartac] This plugin slows down Homebridge. The read handler for the characteristic 'Active' didn't respond at all!. Please check that you properly call the callback! See https://git.io/JtMGR for more info.

In HB debug mode, trying to set the temp to 80°:
[6/27/2021, 12:42:47 PM] [SmartAC] Bedroom AC set target temp: 80 / 26.700000000000003
[6/27/2021, 12:42:47 PM] [homebridge-platform-smartac] Characteristic 'Cooling Threshold Temperature': SET handler returned write response value, though the characteristic doesn't support write response. See https://git.io/JtMGR for more info.
[6/27/2021, 12:42:47 PM] [homebridge-platform-smartac] Error: at CoolingThresholdTemperature.Characteristic.characteristicWarning (/usr/lib/node_modules/homebridge/node_modules/hap-nodejs/src/lib/Characteristic.ts:2038:105) at /usr/lib/node_modules/homebridge/node_modules/hap-nodejs/src/lib/Characteristic.ts:1663:22 at /usr/lib/node_modules/homebridge/node_modules/hap-nodejs/src/lib/util/once.ts:9:18 at /usr/lib/node_modules/homebridge-platform-smartac/index.js:272:30 at processTicksAndRejections (internal/process/task_queues.js:95:5)