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alvr-org / ALVR

Stream VR games from your PC to your headset via Wi-Fi
MIT License
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Lowest latency possible for playable beat saber #77

Closed NullVoxPopuli closed 4 years ago

NullVoxPopuli commented 4 years ago

Hello, this isn't an issue or feature request or anything, but more a question on config.

There are a lot of options, and I'm not really sure what most of them do.

My goal is to be able to play beat saber from steam VR with a/v sync'd and no controller lag. (Where any lag between around 40 and 100ms has significant impact on playability)

Right now it feels like I can't figure out when the game expects me to hit the blocks. It's weird.

In stepmania (ddr for computer), there is a settings area for fixing a/v sync, where it just plays a steady beat and you step on the arrows on the beat, regardless of visuals, and the game gradually adjusts until the visuals match up with what you're doing.

MPfaffe commented 4 years ago

I can't tell a descrete setting but: -Decreasing the Resolution lowers encode and decode latency -decreasing the bitrate lowers mostly transfer latency (maybe force 60 Hz at lower bitrates to stay at better image quality, but the screen flicker uncomfortable) -turn off the sound stream (use e.g. pc audio, BT earphones) should lower the latency -activate ffr slices, lowers the latency (the higher the value, the lower the latency) But I think it is hard to obtain constant latency < 40ms at satisfying image quality at the moment.

NullVoxPopuli commented 4 years ago

After playing BeatSaber a bit in both steamVR and the demo in the quest, I think the problem is with beat saber. The timing of when I should hit the blocks is different from what the game considers correct