Bandwidth / Throughput Question

[Spyder Jerusalem]

Hey -
overall works great for me. I'll post more specific feedback later on but quick question first:

With resolution (per eye) at native VP 3,660 x 3,200 with let's say HL:A, I get roughly 50-55 ms at 90 FPS, which is quite good.

However, the iVry Settings app shows a throughput of 24-25 Mbps and tested Bandwidth around 60-70 Mbps, which seem very low for that resolution and frame rate, even with h.265 and HL:A. It would give a compression ratio of something like 1000:1 or even 2000:1.

The resolution and frame rate in the iVry app is correct as fpsVR shows the same.

I can't quite wrap my head around 25 Mbps throughput looking this good, as I would expect something like 120 - 180 Mbps.

Is it possible the value reported in the app isn't correct ? Or maybe it shows the static SteamVR / iVry settings throughput at that point in time rather than the game's ?

Or something ...

[iVRy]

The correct notation is Mb for Megabits, and MB for Megabytes. The driver UI uses Mbps to and MB/s to make the distinction clear. H26x encoding rates are Mbps, and network throughput is MB/s. Throughput is not the same as H26x encoding bitrate, it includes other network traffic (eg. tracking and audio), as well as framing and TCP overhead.

[Spyder Jerusalem]

Thanks. Completely missed that. The world makes sense again.