Disable HDR Output on XG1v4 Box

Fox offers some sports events in 4K HDR, which display too dark with overly bright whites on my LG OLED TV.  It's bad enough that I watch those events in HD instead of 4K.  I am wondering whether there's a way to disable the HDR element of the X1 output to see whether it is responsible for the brightness issues.  I did not find an option in settings.  This is only a problem with the Fox Sports events, other content in 4K HDR looks fine.   Thanks.