Big performance difference between Quests?

Weltenmacher

Hey,
we have two Oculus Quests which have both the same firmware, still, the performance is dramaticly different. In renderDoc (multiple times tested) the #1 has an average framtime of 25ms... #2 has 43ms...
We also tested it with the Unreal Profiler which came to this result:
#1: Ave FPS: 68.81 | Min FPS: 37.93
#2: Ave FPS: 65.55 | Min FPS: 23.04

...We tested both Quests with full battery and when they were "still cold".
Does anybody has the same problem or maybe an explanation/solution for it?

RuneSR2

Weltenmacher said:

Hey,
we have two Oculus Quests which have both the same firmware, still, the performance is dramaticly different. In renderDoc (multiple times tested) the #1 has an average framtime of 25ms... #2 has 43ms...
We also tested it with the Unreal Profiler which came to this result:
#1: Ave FPS: 68.81 | Min FPS: 37.93
#2: Ave FPS: 65.55 | Min FPS: 23.04

...We tested both Quests with full battery and when they were "still cold".
Does anybody has the same problem or maybe an explanation/solution for it?

It's basically 66 fps vs. 69 fps (less than 5% diff), min fps don't really count and may be caused by some infrequent disturbance. Try to run the test 10 times on each hmd and calculate average fps for each hmd. Do you still see a difference?

Weltenmacher

RuneSR2 said:

Weltenmacher said:

Hey,
we have two Oculus Quests which have both the same firmware, still, the performance is dramaticly different. In renderDoc (multiple times tested) the #1 has an average framtime of 25ms... #2 has 43ms...
We also tested it with the Unreal Profiler which came to this result:
#1: Ave FPS: 68.81 | Min FPS: 37.93
#2: Ave FPS: 65.55 | Min FPS: 23.04

...We tested both Quests with full battery and when they were "still cold".
Does anybody has the same problem or maybe an explanation/solution for it?

It's basically 66 fps vs. 69 fps (less than 5% diff), min fps don't really count and may be caused by some rare disturbance. Try to run the test 10 times on each hmd and calculate average fps for each hmd. Do you still see a difference?

All those datas are multiple times tested and like you said, 5% diff is not that much, but I am more concerned about the datas I'm getting from RenderDoc and Snapdragon Profiler...with at least 10 times testing I get an average difference of 17.25ms

RuneSR2

Can you see the specs - are both gpus using exact same speed, and the ram etc? I haven't seen described if new Quest revisions have emerged. 

Mradr

My only thought is that there is a difference either from an application stand point or data difference. If we are talking about a 5% difference though - that might just be the luck of the draw more than anything. No different than a intel CPU overclocking a bit higher than the chip next to it. It's possible one of the headsets might be getting the same numbers but frame stuttering - in that case - it sounds like a bad chip possibility and would recommend returning the product and explain what you are seeing then. Short of that - it be hard to say what the problem is without knowing all the variables. 

Also, if those frame times were correct- I have a feeling you would see LOWER frame rate than avg. This seems more like your lows than it is your avg frame time.

ReBornTheFirst

You could reset the Guardian History. All those Pointclouds could have some influence in performace.

CrixUK

Both from factory reset?