r/Vive•
Mapleint

Vive wireless rythmic framedrops

Hello, as the title states, every second or so fpsvr reports a frame drop, this comes with 1 frame or so of lower quality or even a blackout, this seems to have happened when i obtained the VIVE wireless adapter, this happens under all types of load, whether it's B&S or just steamvr home

-specs-
Gigabyte ax370 k3
ryzen 1600
gtx 1080
16 gb ddr4 2133 mhz
and the 2016 vive with the wireless adapter

Posted Jan 20, 2020, 4:24 AM UTC

112
LumensAquilae•

It could be an application running in the background hogging the CPU. If you're having difficulty tracking it down, try downloading the Windows Performance Analyzer from the Microsoft website and run that for a minute or so. WPA recording a noticeable performance impact so you may have even worse issues while it's running, but once you stop you'll have a report that you can open in the analyzer that will show you CPU usage graphs broken down by process.

I've used this in the past to track down applications or processes that were causing hitching in VR, usually by hogging CPU resources intermittently.

2
gamert1Your text here •

Thank you for reminding me of this program!

1
Wrenchheadernew user|low karma account•

Did you ever figure this out? It sounds exactly like the issue Im having, about every second my performance readout spikes due to what I believe CPU load. My pc is more then capable, i7 8700 and a 2080....really frustrating dropping a single frame every second....

2
MapleintOP•

Well i remedied it by overclocking my CPU. I 'm not exactly sure why but maybe that'd help.
Short of changing most of my PC i don't know what it really is other than my CPU, sorry.

2
Wrenchheadernew user|low karma account•

I'm kinda leaning towards cpu as well being lowering resolution doesnt do anything except lessen the spikes, got a i9-9900k ordered which I've been wanting for awhile anyways

2
isellbrain•

I had kinda same issue. Enable advanced fpsVR overlay and look at CPU/GPU load graphs. In my case there was sudden peaks in CPU load which caused frame drops. At the same time GPU load was about 60-70%, which is perfectly fine.

There was some issue with my software, so I just reinstalled system and now everything works perfectly fine.
Also refer to your vive wireless installation guide and system board manual as well to check if you are using correct pci express slot.

1
MapleintOP•

Yeah the CPU shits itself every second, did you do a reinstall of windows entirely?

1
isellbrain•

Yes. I just reinstalled windows completely because at the moment being I just tired of fighting with this issue.

1
Nagorak•

The Ryzen 1600 has a pretty low frequency and may be too slow to handle the compression, especially when paired with 2133 MHz memory. Ryzen benefits a lot from faster memory and correspondingly is badly hindered by slow memory.

If you did an overclock to 3.7 GHz or so and replaced the memory with 3200 MHz CL14, or at least 3200 CL16 (preferably with tweaked timings from Ryzen DRAM Calculator) then I think the issues you're having would probably go away.

1
MapleintOP•

further investigation in cpu z shows my memory which should be high, the dram frequency says 1066.4 ddr4 which is insultingly low,, but tm reports 2133, i'll see if overclocking remedies such.

1
Nagorak•

It's because memory is double data rate, so basically 2133 MHz memory is actually running at 1066 MHz but then it's doubled. But even so 2133 MHz memory is really slow, and it's not sufficient to get the most out of your processor. Overclocking could still help, regardless though. You may also be able to overclock your memory a bit, as well.

2
gamert1Your text here •

Hyperthreading on or nah?

1