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slow banking site

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  • Last reply by FredMcD

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recently Firefox displays warning, shown attached *.png below. Only seems to be on this one bank site making it unusable. Bank support knows of no known issues with Firefox. ver 87.0 (64 bit) on W 10 pc Cleared history, cache and cookies multiple times. Suggestions appreciated. Thank you.

recently Firefox displays warning, shown attached *.png below. Only seems to be on this one bank site making it unusable. Bank support knows of no known issues with Firefox. ver 87.0 (64 bit) on W 10 pc Cleared history, cache and cookies multiple times. Suggestions appreciated. Thank you.
Attached screenshots

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”Webpage is slowing down your browser” This is the new way the browser tells you there is a problem with the script program(s). https://support.mozilla.org/en-US/kb/warning-unresponsive-script?cache=no

https://support.mozilla.org/en-US/kb/task-manager-tabs-or-extensions-are-slowing-firefox