Hello Even with my current rig and 20GB 7900 XT, Davinci Resolve is strangely warning that my GPU memory is full, even though Task Manager says the GPU is hardly used, and even with only 1x 4k monitor in use? Is this likely to be a false positive error due to their shoddy code/optimisation, a glitch, bad settings in Davinci or something wrong with the card? Task Manager states GPU utilisation is around 1-2%, so I'm guessing this is some type of bug, or it hasn't been optimised for my card, or some settings in Davinci are awry? I can't ignore the prompt because the timeline will NOT play if I click play while it warns about GPU. I have hardly any other programs open, so this is very annoying when I spent £600 on a card. It has only done this today, for the past 2 weeks it hasn't had this issue even with both screens open. When I had both 4k displays active, the max usage in TM even with loads of 4k video and programs open was about 12gb, so I'm guessing this is a glitch or incorrect setting in Davinci that isn't utilising the capacity of the GPU properly? Warning: https://postimg.cc/0M5G2hLL Davinci settings: https://postimg.cc/nMpVMpSs Task manager: https://postimg.cc/n9jDXxTw How can I check this?
Instead of Task Manager, try GPU-Z or HWInfo64 — these give more accurate VRAM usage over time and show if Resolve is allocating more than it shows. Look for the "Dedicated GPU Memory" usage and dynamic spikes during timeline loads or playback attempts. If it's not moving, there may be some kind of bug or incompatibility with your GPU and/or driver version.
Hi Shirty This is the GPU-Z when I'm playing 4k video within Davinci resolve: https://postimg.cc/jws277Q1 So about 15-20% under load it states, is this normal? I've restarted and it isn't showing the warning just now, but does everything look fine on that?
Check that you've got the GPU selected in the options. Can't remember exactly where it is but you should be able to manually select it. Could also be a false error, and the problem lies elsewhere. Check how much ram is being used, cause doing 4k annihilates system RAM. I did my first bit video in 4k (in resolve) with ,16gb and it was painful. Also check how much space you have on your SSD. Davinci caches the timeline onto your ssd and when that's full, it will go to your HDD, again causing major slowdown.
Hi Crapman Check it's selected where... in Davinci? If I go, Davinci > Preferences > Memory & GPU, this is what I see: https://postimg.cc/nMpVMpSs Does that look like it is correctly using it? I've never altered these settings before, as I assumed it would automatically utilise the new card properly. GPU-Z changes load when I open and close Davinci so it is definitely being used in some way by it. Interesting about the RAM and SSD, I have 32GB and sometimes it goes over 50% when editing and multiple other programs open. I have a 1TB NVME with 283GB free, and I setup a temp folder on desktop to store my 4k vids while editing rather than HDD then move to HDD once completed.
Yeh that looks ok. Been a while since I've used it and not near my rig at the mo, but there's another section for decoding, check it's using the GPU for that too: Might be worth checking the caching options, because that has major impact in performance. Using smart caching is what I used to use, copied this off a how too guide: How to optimize Smart Cache settings in DaVinci Resolve? Optimizing Smart Cache settings in DaVinci Resolve can significantly improve your editing and rendering speed. To do this, first, go to the "Playback" menu and select "Render Cache". From the drop-down menu, choose "Smart". This setting will allow DaVinci Resolve to automatically decide which clips need to be cached in order to ensure smooth playback. Next, you need to specify where you want your cache files to be stored. Go to "Preferences", then "System", and then "Media Storage". Here, you can add a location for your cache files. It's recommended to use a fast SSD drive for this purpose. Also, make sure to regularly clean your cache files to free up storage space. You can do this by going to the "Playback" menu, selecting "Delete Render Cache", and then "All". By optimizing these settings, you can enhance your overall experience with DaVinci Resolve.
