Topaz Unfortunately at the time I couldn’t get my hands on a 5090. I went with the MSI Vanguard 5080 instead.
I had some issue initially but it was due to the bios version in my GTi14 Ultra 9 185H. I have an early model that can only support bios T100-T105. There is an issue with a lot of motherboards with PCIe learning and the 5000 series cards. During the boot process when the system tries to detect the PCIe version, and because of that, it gets locked to a lower version. This causes severe stuttering in the system. Unfortunately the T105 version of the bios does not correct the issue for the model that I have.
I had to go into the PCIe config and manually lock all PCIe lanes to Gen 4. Since I’ve done this I’ve had zero issues with my setup. I’m not sure which BIOS version corrects this for the GTi14 but I know it’s not one that’s compatible with my unit(T100-T105).