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Bendy,

It certainly looks like a good fix for those with unusual cards or who come up against those crashes described. Nice one!

A little later;

A search around found this:

https://docs.microsoft.com/en-us/windows-hardware/drivers/display/tdr-registry-keys

and this;
...

Hi Bendy,

I also went in with spade and had a dig down for this key (always looking for ways to improve system speed) and also couldn't find it anywhere. I have show hidden files and folders...