Hi,
In case anyone else experiences this, thought I'd tell you my findings. After I installed the drivers I saw that Windows was using the Microsoft Basic Graphics adapter and the screen kept resetting (going black for a second or two) whilst windows was trying to enable the device.
Resinstalling windows didn't help. In the end I found the problem was resolved by changing BIOS setting to set the PCIe mode to 3 rather than auto. In my case this is probably due to my PCIe 90 degree adapter not supporting PCIe 4. So I will have to find a replacement. Having said that though the scores the GPU is getting in Port Royal are about average for the same GPU / CPU combination. So I suspect the 3080 is not actually needing the PCIe bandwidth.
In case anyone else experiences this, thought I'd tell you my findings. After I installed the drivers I saw that Windows was using the Microsoft Basic Graphics adapter and the screen kept resetting (going black for a second or two) whilst windows was trying to enable the device.
Resinstalling windows didn't help. In the end I found the problem was resolved by changing BIOS setting to set the PCIe mode to 3 rather than auto. In my case this is probably due to my PCIe 90 degree adapter not supporting PCIe 4. So I will have to find a replacement. Having said that though the scores the GPU is getting in Port Royal are about average for the same GPU / CPU combination. So I suspect the 3080 is not actually needing the PCIe bandwidth.