[Feature Request] Automatic FPS Capping Integration

[26d0]

Summary

Add RTSS integration to automatically reduce FPS limits when sleep mode is activated, providing additional power savings and thermal management during VR sleep sessions.

Problem & Solution

High frame rates during VR sleep waste power and generate unnecessary heat. Integrating RTSS API would allow OyasumiVR to automatically cap FPS (e.g., to 5 FPS) when sleep is detected and restore normal(no) limits when waking up.

Benefits

• Enhanced power efficiency beyond existing GPU limiting
• Reduced system heat and fan noise during sleep
• Extended battery life for wireless headsets
• Seamless integration with current sleep detection and power automations

This would complement OyasumiVR's existing power management features perfectly.

[Raphiiko]

@26d0 The next release will have support for frame limiting games through SteamVR, but only on headsets that support it (mostly native SteamVR headsets, like the Valve Index or Bigscreen Beyond). It's already available to test on the beta.

I've looked into frame limiting through RTSS before, but its API seemed prohibitively complicated, which left me to drop it.

I'd be happy to revisit this, seeing how it would be quite a bit more flexible than the upcoming solution for frame limiting, but I would probably have to rely on someone contributing simplified Rust bindings for me to be able to integrate this into Oyasumi. Unless someone is willing to help out with that, I sadly don't see this integration happening.

[26d0]

Maybe this is the method; https://github.com/Erruar/RTSS-CLI

Integrate the RTSS CLI into your project by invoking the executable with the appropriate arguments from within your code. This makes it easy to add RTSS support to any application, regardless of the programming language.

[Raphiiko]

@26d0 The project you mentioned seems to specifically be "designed to simplify the process of changing text in the On-Screen Display (OSD) of Riva Tuner Statistics Server (RTSS)". I don't really see its relevance in this case.

[sofoxe1]

https://github.com/sofoxe1/rtss-fps-limit/blob/e5db2caf1f114abd619387c59fd6dfba24b68efe/src/main.rs
has to be run as admin
i will work on proper bindings (and asking for admin only once to change file permission) in the future

[Raphiiko]

@sofoxe1 that looks very workable! Thanks for the info, I'll be looking into this sometime in the future.