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    It is unclear from your question whether changing the mains outlet has any effect. Could you please edit the question to make that clear? Was any outlet consistently better or worse than another?? Commented Sep 29, 2022 at 18:21
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    Some outlets working better than others would suggest there's something wrong with your outlets. Voltage differences are too small to matter under normal circumstances.
    – gronostaj
    Commented Sep 29, 2022 at 20:42