Hardware & Technical Bad Stutters in CZ with Ryzen

JonSnowman · Apr 27, 2017

So recently replaced my i7 3770 with a Ryzen 1600.

GPU is the same R9 390.

On the whole the game has been much smoother, with the exception of CZ's.

After about 10-15 minutes the game will start to stutter quite badly, and I notice CPU utilisation getting up above 30% (quite high for a 6-core CPU).

Could I be hitting the limits of what this CPU is capable of?

Fell specs are:

Ryzen 1600 @ 3.2Ghz
16GB DDR4 @ 2933
R9 390
240GB SSD
5760x1080 (3x1080 Freesync)
Vertical Sync On
Refresh Rate 120Hz
Graphics: High Preset

MickyG1982 · Apr 27, 2017

JonSnowman said:
So recently replaced my i7 3770 with a Ryzen 1600.

GPU is the same R9 390.

On the whole the game has been much smoother, with the exception of CZ's.

After about 10-15 minutes the game will start to stutter quite badly, and I notice CPU utilisation getting up above 30% (quite high for a 6-core CPU).

Could I be hitting the limits of what this CPU is capable of?

Fell specs are:

Ryzen 1600 @ 3.2Ghz
16GB DDR4 @ 2933
R9 390
240GB SSD
5760x1080 (3x1080 Freesync)
Vertical Sync On
Refresh Rate 120Hz
Graphics: High Preset

Probably not, though your 390 probably isn't coping with the three monitor setup well...

And if you were hitting the limit of what the cpu was capable of, you'd be hitting somewhere near 100% not 30%.

JonSnowman · Apr 27, 2017

The 390 is often at 100% but i had that before when i had the i7, and no stutters like this.

Also i wouldn't imagine that ED would ever use all 6 cores of this CPU as the game would not be optimised for that many cores/threads. Im wondering if 30% CPU utilisation would be about 100% of what the game could use.

CMDR MAIN SEQUENCE · Apr 27, 2017

Could be a coincidence, I've seen others reporting stuttering in CZs. Try it with just one monitor and see if the issue continues, that will at least help to isolate the cause further.

shadragon · Apr 27, 2017

From a support site.

The max resolution is just whatever the display interface supports. The 390 has DisplayPort 1.2, which can support 4096x2304 at 60Hz or 5120x2880 at 30Hz. If you use HDMI then the max is 4096x2160 at 24Hz.

I'd physically disconnect the two side monitors and try it with one. You may be hitting the limits of the DisplayPort connection.

yashmack · Apr 27, 2017

AMD released new windows 10 chipset drivers for ryzen today, try installing those and see if it improves...

https://wccftech.com/amds-new-ryzen-chipset-drivers-boost-performance-power-efficiency/

JonSnowman · Apr 28, 2017

shadragon said:
From a support site.

The max resolution is just whatever the display interface supports. The 390 has DisplayPort 1.2, which can support 4096x2304 at 60Hz or 5120x2880 at 30Hz. If you use HDMI then the max is 4096x2160 at 24Hz.

I'd physically disconnect the two side monitors and try it with one. You may be hitting the limits of the DisplayPort connection.

Those are actually higher rez/more pixels than what I am running. And those Displayport specs are for a single port. I have them plugged in separately, not daisy chained.

And again, same video card, just new processor.

I did upgrade to this CPU the same time 2.3 came out so it is a bit hard to know. But the spike in cpu utilisation is what has me thinking CPU.

My real question is - is anyone else using ryzen? And are you getting stutters in a CZ?

shadragon · Apr 28, 2017

JonSnowman said:
I did upgrade to this CPU the same time 2.3 came out so it is a bit hard to know. But the spike in cpu utilisation is what has me thinking CPU.

Which is why I asked you to try it with just one monitor. If the CPU is the cause, the stutter will remain with a lesser GPU load. If not, it could be some sort of GPU issue. Bad silicon lottery or internal fault. I don't know how AMD handles the DP 1.2 standard across multiple monitors. Reduce it to one, simplify the setup and see what happens.

What are the temps like on the CPU / GPU under load? 2933 RAM, are you OC'ing it?

MickyG1982 · Apr 28, 2017

shadragon said:
Which is why I asked you to try it with just one monitor. If the CPU is the cause, the stutter will remain with a lesser GPU load. If not, it could be some sort of GPU issue. Bad silicon lottery or internal fault. I don't know how AMD handles the DP 1.2 standard across multiple monitors. Reduce it to one, simplify the setup and see what happens.

What are the temps like on the CPU / GPU under load? 2933 RAM, are you OC'ing it?

A CPU at 30% isn't going to be bottlenecking a thing - the 390 running at 100% is however because it can't keep up with everything the processor is pumping to it. As the OP has already stated that his GPU is hitting 100% while his CPU is at 30%, this shows exactly where the bottleneck is occurring.

The processor won't go any higher simply because the GPU can't ramp up any further & is slowing perfomance down - causing the stutter, it's worth noting that the GPU will also begin to get hot & throttle back too (to save itself). 10-15 mins would be just about where I'd expect it to be doing that in a CZ if it was a temperature issue too.