• VSCode Version: Latest Insider
• OS Version: OS build 15063

Steps to Reproduce:

1. Open a file with code in it, the type does not matter.
2. Arrow through the file at a rate of about twice per second, while NVDA is running.

Observed Behavior:
Rather than speaking the focused line, NVDA will at times read the line or even several lines above it.
Interestingly, braille output appears to work well enough.

Expected Behavior:
NVDA should speak the correct line when navigating through code, for a lot of people using screen readers do not use braille displays to compensate.

Suspected cause:
The fact that braille works well and speech does not leads me to believe it takes too long for the focused line to be visible for NVDA. I don't know enough about the VS Code internals to comment further.