VR Performance Question (HTC Vive)

[Bluelight]

Ok so I just found out something interesting! Before when running in 2d, I tested DCS 1.5 using MSI afterburner and did notice that one of my cores of my CPU was running high like 95% which is what everyone was saying and was the reason the gpu wasn't running full.

 

What I had never tested was MSI afterburner while in VR. So I did so.. both on 1.5 and 2.0.

 

WEIRD thing is that I loaded up problem areas on both versions (2.0 was vegas tour in the Huey and 1.5 was the Harbor tour in the Huey)

 

Guess what.. my CPU never got about around 65% while in VR and my GPU usage was anywhere from 40% to 60%.

 

This makes NO SENSE to me.. BTW these problem areas are 30 fps or LESS in VR. The Vegas Tour pretty much is 30 all the time and the Harbor tour is 18 fps when looking at the main city that is next to the harbor.. everywhere else is 45 or 90.

 

All this time I was thinking the fact that it only uses one main core of the CPU maxed out was why this stuff was happening and why the GPU wasn't running full speed but now I have no idea why I am only running half my GPU power if it isn't bottlenecking.

 

In both of these tests I had the Nvidia Control Panel set to "let application decide" so DCS should be in full control. I'm baffled and irritated that I can't get atleast 45 fps in these towns, even on low settings.

[Enduro14]

Wow wonder if everybody else using the Vive has same problem hope others with it comment. What Gpu and processor do you have?

[Bluelight]

Wow wonder if everybody else using the Vive has same problem hope others wiIh it comment. What Gpu and processor do you have?

 

I7 950 oc to 4ghz and gtx 970 FTW. Neither running at more than about 50%. it made more sense when I thought the one cpu core was running at 95-99% which it was in 2d, but this makes no sense to me.

 

When it comes to being stuck at 45 fps in VR, I know I'm not alone but when it comes to being under 30 fps in cities with this lack of gpu and cpu usage, I feel sort of alone right now.

[Loz]

People putting up performance details without showing at least what CPU and GPU they have is a total waste of time.

Get them added to your sig please.

[hansangb]

970 is probably at the low end of acceptable HW for VR. But you should give the beta a shot. I just read from another user that performance for Vive got a boost.

[Bluelight]

970 is probably at the low end of acceptable HW for VR. But you should give the beta a shot. I just read from another user that performance for Vive got a boost.

 

2.0 is a beta and does the same thing but I guess u mean 1.5.4 beta. It should be releasing soon so I was waiting for that. And it's true that the 970 is on the lower end for VR.. But what difference does that make when neither the cpu or gpu is being used past 50-60%?

[Bluelight]

People putting up performance details without showing at least what CPU and GPU they have is a total waste of time.

Get them added to your sig please.

 

Responding to a thread with a comment like that when you clearly didn't read the first post is a waste of time. If you had of read the OP, you would have seen my entire rig details.

[Bluelight]

That behavior is typical of DCS since always. When the FPS sink it's because the CPU and the GPU are idling and cold waiting for something to happen instead of them being topped out. Without more information, I've always thought that it's dued to information flow between the CPU, GPU and the RAM. They sit idle waiting for data transactions to finish most of the time and then consume it in a very short moment, and then back to waiting.

That would explain why overcloking has such a positive impact on performance in DCS. More than switching to a better GPU alone.

 

But why would the CPU/GPU activity not spike when you look at a populated city like Vegas vs looking away from it at a desert. In that case, the FPS changes drastically and the CPU/GPU never actually kick in at all it seems. The more I see how this sim works the more I can't understand why they haven't optimized or fixed these things already.

 

I understand them resisting changing the engine to work with more than 2 cores.. fine. But when the sim isn't even utilizing all of one core and half of the gpu.

[Bluelight]

I posted a new thread with videos of what i was talking about here. I decided to post it in a new thread as I just discovered this after starting this one and it applies not only to VR (although more importantly to it.)

 

http://forums.eagle.ru/showthread.php?t=169738

[Loz]

Responding to a thread with a comment like that when you clearly didn't read the first post is a waste of time. If you had of read the OP, you would have seen my entire rig details.

If you look through this thread and many others, you will find that a lot of people comment on their performance and make no mention of their Spec making their comments virtually useless to others trying to gauge relative performance.

It takes two minutes to make a change to ones profile signature to show at least CPU and GPU.

That is the point I was making.

Edited July 6, 2016 by Loz

[Bluelight]

If you look through this thread and many others, you will find that a lot of people comment on their performance and make no mention of their Spec making their comments virtually useless to others trying to gauge relative performance.

It takes two minutes to make a change to ones profile signature to show at least CPU and GPU.

That is the point I was making.

 

I did add my details to my signature after you said that.. but you could have been less rude in the way you conveyed the suggestion IMO... maybe u didn't mean it to sound sarcastic thats just how it read to me.

Edited July 7, 2016 by Bluelight