>For example if I touch the element at Rx0 and Tx0, also the counts of the other elements of the Rx0 line fluctuate. Would be nice if you tell more about fluctuations - mean and deviation. Could be mains AC coupling or conducted EMI from switchmode power supply (of debug computer for example). You shall test using mains-isolated setup: power your device from battery and debug it using laptop (running on battery) which is not connected to anything else except your device
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