Is this behavior seen on only one or multiple sensors? Have you built/assembled custom PCBs or a BME680 shuttle board?
Please confirm that the gas sensor configuration is correct (both values and bus transaction). We typically recommended running known code first, but we currently provide C-code only.
If the resistance values reaches its maximum value, it is often a sign of assembly or integration issues. Please make sure that you follow the instructions in BME680's HSMI manual.
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