Gurm and KM, thank you for the quick responses!
KM: In the next couple days I'll reload windows clean to 1507 and insert the group policy, find an older graphics driver that works on 10, and get ditherig.exe running.
Gurm: From what you said I underetand the security updates will not affect the rendering, so long as the edition is still listed as 1507. That's good to know. I'll update when I get everything running-- probably will take a few days to a week before I get to it. Thanks again!
Is it still possible to to prevent auto updates on Windows 10 LTSB 2015 on XPS 13? Also, Which intel graphics driver is recommended for this device?
After following this forum for a while, I purchased a used XPS 13 9343 (2015) wiped with no operating system, and separatley bought Win10 ENT LTSB 2015 key/ISO off ebay. I booted windows to the device from USB and before establishing an internet connection selected "defer upgrades" and "notify to schedule restart" under the advanced options in windows update. Dissapointingly, after a couple reboots the computer had automatically downloaded and installed a slew of 2018 updates. Does anyone know another way to turn off updates?
As for the graphics driver, after the device auto updated to the 2018 version, I attempted to install 20.19.15.4483 but got the "not meet minimum requirments" window. Does anyone know another old driver that will work on this device?
I'm tempted to try Win 7 or linux. Currently it burns my eyes out within 5 min, but want to give it a fair trial in the correct software configuration before writing it off... and trying something else.
I appeciate all the work that has been done on this forum and would appreciate any suggestion!