I don;t actually remember how long, however, more than 5 years and
on the forum since 17 July 2020, not though on the same computer.
Frankly, I have no interest in changing email clients to test a theory,
and I do not experience the issues you describe.
¡Buena suerte!
skybat
¡Saludos desde Sevilla la soleada en España!
¡Mis mejores deseos y mantente a salvo!