The HD option has been so unreliable as to be useless for a long time. I seriously doubt they will do anything about your 4K issue.I did manual recordings for the games i wanted before exploring the onepass route.
For onepass, i eneded up setting the channel to 1499, and manually checking 1498 forany games i had missed.
They either need a 4k option for video quality on the onepass, or the ability to specify multiple specific channels to restrict the onepass to.
At one time we could make multiple Season Passes for the same program on different channels, which would have made it possible to do what you need. That capability was lost when they re-did Season Passes to One Pass; when the issue was pointed out to TiVo (they had a presence here then) they refused to address the problem.