Block windows device driver updates (google it), check LG for driver/firmware updates, install.
Check with dell/lg support if your card/adaptor/tv combo is compatible/capable of.
Been there, done that, got mixed stories from everyone!!! Was told by Dell, whom we purchased the system from, that that card cannot do what we want! Well, that’s what they SOLD us when we specified what we needed! So, go figure!
Need to hear from folks who have accomplished this.