Which view/file caused this? v0.2.2 (coming soon) has significant performance optimizations for large files - deferred syntax highlighting, galley caching. If you can reproduce, please open an issue with details!

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WillAdams 9 hours ago | parent [-]

I launched the file, typed:

>Now is the time for all good men to come to the aid of their party. >test

and selected the last and made it bold using the formatting bar.

	▲	OlaProis 3 hours ago \| parent [-]
		Thanks for the repro steps! This is helpful, formatting bar interaction shouldn't spin up the fan for such a small document. v0.2.2 has some performance improvements and is out, so it might be better, but this specific case might need investigation.