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Why doesn't Da Vinci Resolve use more memory?

PostPosted: Thu Apr 25, 2024 11:51 pm
by balloony
I'm curious, why doesn't my computer use more resources. The playback is dreadfully bad, and I thought I just needed a better computer, but then it's not really using all the resources anyway, so I guess that won't help.

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Why doesn't it just use more resources?

Re: Why doesn't Da Vinci Resolve use more memory?

PostPosted: Fri Apr 26, 2024 9:30 pm
by Jim Simon
It uses what it needs when it needs it.

Re: Why doesn't Da Vinci Resolve use more memory?

PostPosted: Sat Apr 27, 2024 12:14 am
by Dermot Shane
your machine has 32g, and Resolve is using 17g
my machines have 128g, at times i see Resolve using 70+g, but more typicaly around the same as you see, currently i see 20g sys ram useage, it's a feature with 2100 edits open

my guess is Resolve will use what it needs up to % of the total ram on the system?

the only variable that seems to effect the use of sys ram is total number of projects + timelines open, when i use dynamic project switching and several projects with large timelines indexed i'll see sys ram use rise

other than that variable, i don't see much use of the sys ram, but i rarely touch Fusion

Re: Why doesn't Da Vinci Resolve use more memory?

PostPosted: Sat Apr 27, 2024 1:21 am
by Marc Wielage
I bet if you fire up Fusion, it'll use more RAM.

Re: Why doesn't Da Vinci Resolve use more memory?

PostPosted: Sat Apr 27, 2024 1:25 am
by Uli Plank
DR, apart from Fusion, doesn't get faster with more RAM under Windows, it's all about GPU power.
Apple silicon is different, since the GPU cores can profit from RAM.

Re: Why doesn't Da Vinci Resolve use more memory?

PostPosted: Sat Apr 27, 2024 1:45 am
by Nick2021
Using more memory won't speed up playback.

Slow playback might be a codec that isn't accelerated by the media decoder (GPU/IGPU) . It might be you've added effects or something that the machine is struggling with.

Re: Why doesn't Da Vinci Resolve use more memory?

PostPosted: Sat Apr 27, 2024 1:54 am
by Joe Shapiro
What gpu do you have?

Re: Why doesn't Da Vinci Resolve use more memory?

PostPosted: Sat Apr 27, 2024 7:09 am
by Sean Nelson
balloony wrote:Why doesn't it just use more resources?

Go to the menu bar and click "DaVinci Resolve --> Preferences..."

Click the "System" tab at the top of the dialogue box.

Click "Memory and GPU" in the left panel.

Do you have a limit on the how much memory Resolve or Fusion will consume?

Resolve and Fusion won't necessarily use up the entire amount you've allowed, but they definitely won't use more than that.

Re: Why doesn't Da Vinci Resolve use more memory?

PostPosted: Sat Apr 27, 2024 10:45 am
by Mads Johansen
Sean Nelson wrote:
balloony wrote:Why doesn't it just use more resources?

Go to the menu bar and click "DaVinci Resolve --> Preferences..."

Click the "System" tab at the top of the dialogue box.

Click "Memory and GPU" in the left panel.

Do you have a limit on the how much memory Resolve or Fusion will consume?

Resolve and Fusion won't necessarily use up the entire amount you've allowed, but they definitely won't use more than that.

If only that was the case :(