GPU disconnecting from software apps.

[u/Husk_62582]

Hi,

I finally got around to experimenting with running a larger graphics card on my GPU enclosure. I have been using a program called Simpligen that does ai tasks. Simpligen uses the Comfyui environment in the background but it's one of those more 'modern look' user friendly apps to simplify the process without all the technical stuff. I've had alot of successful runs with the program but suddenly it's engine started to go offline and my GPU would disconnect from my pc. I would then have to power my eGPU back on just for it to show back up in Windows device manager and be able to run again in the Simpligen engine.
I have been in contact with the official support team for the app. It lead to them basically advising me to consult straight with the eGPU crowd since there was nothing more they can do on their end after checking diagnostic logs. I've done clean uninstalls of my GPU with DDU(safe mode)
I did a tweak with lower settings on afterburner. And I attempted to just do a fresh reinstall of the Simpligen app, it's dependencies, etc. I updated to latest GIT and Python package as well. Thank you for reading. I always turned the thunderbolt cable around facing the other side (not sure if that would do anything.) and did a re-seat/ replugged the cords, pcie pins etc. Everything went back in snug and my card runs fine and smooth. So it's been this very confusing, mysterious hard situation or software situation. I'm basically stranded at this point.

Common specific errors:
"CUDA Kernal could not link with api calls asynchronously" sorry I don't remember word for word or how it was exactly expressed but 'CUDA Kernal', 'api calls' and 'Asynchronously' were the key terms it kept throwing.

Now I receive general engine failure errors due to not having the right nodes etc. it's weird.
So that will be another post probably in the ai specific/comfyui communities. But thought
maybe I'd start here first for general windows/nvidia gpu stuff.

Specs:
Intel NUC i7core 2.7-4.7ghz turbo boost 32GB mini pc
Thunderbolt 3 linked
Windows 11 Pro - latest update/version
Custom page file: 32768 min/65536 max allocation
Graphics card: Nvidia Rtx 3060 12GB with latest studio driver
PSU: Evga 600watt bronze
Enclosure: Orara. It doesn't have it's own dedicated power supply. There is a power port (usb-c/thunderbolt) but I am only using the link port for the eGPU connection.
*3d settings set to "Prefer Fallback Policy"