<t>Thank you for the suggestions. I had none of the above running but uninstalled GeForce Experience, MSI Afterburner and RivaTuner just in case. In a similar vein I deactivated the Windows Game Bar.<br/>
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Still the corruption continues.<br/>
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Any further suggestions would be welcome.<br ...

<r>Having used Sweet Home 3D some years ago I decided, on needing it again, to contribute by purchasing the paid version.<br/>
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Sadly it is unusable due to graphical corruption. I have attached an image which demonstrates such.<br/>
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<URL url="https://drive.google.com/file/d/1v ...