Troubleshooting

Get a steady connection

Start with the symptom, then make one change at a time.

The computer does not appear

Open FoldThrough at the host and check that sharing is on. For initial pairing, put both devices on the same network and allow Local Network permission. Guest Wi-Fi may isolate devices. Try Add Computer with the host's address if discovery fails.

I can see the Mac, but cannot control it

Allow Accessibility for the current FoldThrough app in macOS Privacy & Security. If the picture itself is missing, check Screen Recording permission. A locked Mac uses an Unlock prompt rather than a captured lock screen.

Extreme stutters on Wi-Fi

Being on a LAN does not guarantee consistent capacity. Try Standard, then reduce Stream Size to 75% or 50%, lower frame rate, or use a single display. For gaming, try Standard + Gaming. Keep changes separate so you can identify what helps.

Open Connection Stats to inspect frame rate, delay and network use. The connection indicator also summarizes health and offers details. A high peak speed-test result does not rule out queuing or intermittent Wi-Fi pauses.

The picture is soft or fails to decode

For soft text, use Full Stream Size and try Sharp Text where supported. A low network target softens motion. If HEVC shows glitches or no picture, try Compatible; decoder support depends on your system and graphics driver.

A movie is black

Protected streaming video cannot be captured. Use the service's app on your viewing device. Changing codecs does not remove this restriction.

Other common fixes

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