If you still have HDR10, not much.
Thanks. The LG streaming app does not have PBS. I emailed PBS and there are no plans for LG. So I'm considering the new Roku Express 4K+. It lacks Dolby Vision, Atmos (no problem) and an Ethernet port. If ac wireless is not satisfactory for 4K UHD streaming (it will be located only 6ft from the ac router) I'll return the unit. Amazon has a free returns policy, Roku does not.