Yeah, this was the saddest part of the announcement for me. Just when amd_pstate was getting good and power-profiles-daemon provided an easy way to toggle its performance state.
mesa-vulkan-drivers are installed? You should check journalctl output when you launch the games that don't work. It should give you more info. AFAIK RDR2 should be working fine.
Are you using AMDVLK or RADV? I've heard that AMDVLK has been the source of a lot of problems for AMDGPU users on Linux.
I preferred Xbox form factor over the Dualshock 3 and 4, but Dualsense is just next level in terms of ergonomics. I am not sure if its just me, but it feels molded to my hands and presses into my palms in all the right places. I just wish it had an easily replaceable battery pack. I miss the AA batteries the Xbox controllers used.
There may be some things that don't get synced if the instance holding the pending federation messages also goes down or restarts because AFAIK they are stored in memory, not in persistent storage.
And also battle-testing Fediverse infrastructure to make it more resilient in the future!