I am late to this part, but I have been playing on a HP t520 thin client with no issues.
My install process was to download the latest CorePure64-13.1.iso and render that to a USB stick with rufus-3.18. The thin client came right up off the USB stick and I had to tce-ab to grab the tc-install and put it on the ssd in the t520. I had to manually add the realtek drivers for the nic but that was the only major speed bump so far. Fingers crossed. Did you run the diags on the thinterm to make sure the hardware is all happy?