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.

Still the corruption continues.

Any further suggestions would be welcome.

Thanks

Having used Sweet Home 3D some years ago I decided, on needing it again, to contribute by purchasing the paid version.

Sadly it is unusable due to graphical corruption. I have attached an image which demonstrates such.

https://drive.google.com/file/d/1v-dBdT76ufquqrNbKV_qu7Y4bD0QhyWa/view?usp ...