Xbox Series Auto HDR over Remote Play?

RDR2 never received a Series upgrade. The Series Snis playing the base Xbox One version. To access the One X version you would need a Series X

You should disable auto HDR on the console if it’s not playing well, and make sure to do the same on your TV. That’s the fake HDR where the tv guesses not the real thing.

It’s also possible the two are clashing

I would highly recommend adjusting your settings to what's mentioned here => Configure your Xbox Series X|S to support FPS boost and auto HDR | Xbox Support

It's probably your console's Auto HDR settings. I have mine disabled right now until I figure out how mine works, and I turned off the Auto HDR on my VIZIO V-Series as well.

They both take performance hit

Anytime you don't use hdmi2.1 there isn't enough bandwidth to handle hdr content over wifi

If you want hdr why are you trying to do it not direct

Common hdmi2.1 is 45 gbps

Wi-Fi is nowhere even close to that even on the low end hdmi is 14gbps -18gbps you are never going to achieve that over wifi you nerd 14gbps to hdr at least

.when you split the display you aren't using DUAL head you have one gpu not 2

You are going to take a hit no matter what since you are asking to display in two spots

And yes remoteplay uses processing

So if you want hdr over hdmi don't split the processing powrer

Regardless of console you take a hit because you are splitting the power typically you only use one at a time

Anytime you split the power of a cpu/gpu you are going to take a hit even on super computer computing power must come from somewhere

Remote play changes the resolution and output for maximum efficiency and performance. That includes disabling HDR