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#1
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Pro Tools HDX and 4K monitors
I'm seeing high CPU usage running at Ultra HD resolution, I can find one reference suggesting that this is a known issue (from last year) – any update on this, Avid?
I am on a MacPro5,1 (2010 6-core), Pro Tools 12.8.1, macOS 10.12.6, HDX, and in this case testing Fabfilter Saturn 1.17 with five bands. At a buffer size of 256 (at 96k), with just signal generator and Saturn instantiated, CPU is spiking up to 100% and the test tone is non-continuous. What changed in my setup is upgrading my GPU to a RX 480 (and macOS to 10.12.6, which I know isn't qualified). I'm wondering if it's something to do with PCIe bus bandwidth. Switching to a CoreAudio playback engine seems to resolve the problem at the same buffer size, and switching back down to 1080p (so far) seems to make things better, although I need to do more testing. Obviously, putting the old GPU in is the next thing I'm going to try.
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https://lukehoward.com/ |
#2
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Re: Pro Tools HDX and 4K monitors
My understanding is that high powered graphics cards will reduce CPU performance.
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Bob's room 615 562-4346 Interview Artists are the gatekeepers of truth! - Paul Robeson |
#3
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Re: Pro Tools HDX and 4K monitors
Thanks Bob – do you think this would still be an issue even when running at lower resolutions? Since switching back to 1080p, touch wood, it seems to be a bit better. I'm kind of trying to avoid having to put the old card back in...
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https://lukehoward.com/ |
#4
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Re: Pro Tools HDX and 4K monitors
I have no idea but these things aren't nearly as linear as we'd like.
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Bob's room 615 562-4346 Interview Artists are the gatekeepers of truth! - Paul Robeson |
#5
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Re: Pro Tools HDX and 4K monitors
Well said. I'll keep investigating.
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https://lukehoward.com/ |
#6
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Re: Pro Tools HDX and 4K monitors
Has anyone tested 4K performance on High Sierra, anything improved?
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https://lukehoward.com/ |
#7
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Re: Pro Tools HDX and 4K monitors
I have a 4K display and it looks best at its native resolution. Sure, I can swap it out, but once you go Retina it’s hard to go back
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https://lukehoward.com/ |
#8
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Re: Pro Tools HDX and 4K monitors
You are the one who has to decide whether having the power you need to mix without restrictions is important enough to go with the lower viewing resolution. Latency usually comes along with the package. Nothing bothers me more than having laggy meters. YMMV.
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Steve Shepherd Extreme Mixing |
#9
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Re: Pro Tools HDX and 4K monitors
I’m aware of that :) my question was whether anything had changed in High Sierra, that’s all.
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https://lukehoward.com/ |
#10
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Re: Pro Tools HDX and 4K monitors
I haven't tried with big sessions but, running a 4K60 display off my RX480 with Pro Tools 2019.5 and macOS 10.14.5 seems a little more reliable CPU usage wise than it was under Sierra. (Mind you it could also be that CPU usage reporting has changed in 2019.5, I recall seeing that somewhere?)
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https://lukehoward.com/ |
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