I noticed M2 seems having difficulty retrieving emails when I have little bit more tabs opened.

Sometimes , web page also not willing to open due to the same reason. I need to kill Opera by task manager and re-start in order to let it work again.

Any other solution instead of kill the Opera as re-starting takes a long time due to the large email data base.

See below the M2 "hang " in the beginning of retrieve and just stays in there no longer picking up mails nor any progressing . ( Opera can work and is not hang )

Thank you very much.
edmond.