I have my Pronto remote wait 30 seconds from the time it turns my NX7 on till it turns on my CX-A5200. As for the UB9000, I don't have a programmed delay. Since my remote doesn't immediately power up a source device (waits for me to tell it which one), the delay is kinda random depending on me. I haven't noticed HDR movies being presented as SDR, but then I haven't paid a great deal of attention either.
1) JVC DLA-NX7 & Sony 65Z9D, Yamaha CX-A5200, Outlaw Audio 7900 & 7700, UDP-203, DP-UB9000, UBP-X800M2, Roku Ultra
2) Sony 75Z9D, Yamaha RX-A3080, 2xOutlaw Audio 2200s, UDP-203, UBP-X800M2, Roku Ultra
3) Sony 75X940E, Yamaha RX-A2080, UDP-203, UBP-X800M2, Roku Ultra