“There’s still all this going on” is used to mean “There are still various things happening” or “The situation is still complicated.” It does not simply emphasize that things are continuing; it also conveys the complexity of unresolved problems or ongoing events.
It is often used in everyday conversation, and in academic or business English, it can be used to emphasize that a project, research, or social issue is still in progress.

3 everyday conversation examples
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There are still a lot of repairs going on. → There’s still all this going on with the repairs.
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I’m still overwhelmed with moving preparations. → There’s still all this going on with the moving process.
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Even after the party ended, there is still so much to clean up. → There’s still all this going on after the party.
3 academic/professional English examples
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Although some parts of this study have been resolved, there is still much debate going on. → There’s still all this going on in the debate around this research topic.
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New treatment guidelines for patients have been released, but there are still several interpretations. → There’s still all this going on with the interpretations of the new clinical guidelines.
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Despite technological advances, there are still various problems in the field. → There’s still all this going on in the field despite technological advances.