Resolve - Fusion - Compute GPU?

Hello,

I have just purchase Davinci Resolve Studio - thanks for the wonderful software. But I have an issue that I do not seem able to fix. When I encode a video (no fusion clips), in task manager I can see that one of two compute engines are being utilised and I receive about 45-50fps rendering the files.

If I switch to fusion and add a clip using CHMapper for example I get 1fps, switch to task manager and I see a lot of GPU Copy activity, but no activity under either GPU Compute engines. Likewise if I try to render the file, I only get 0.5-1fps and no compute engines used at all, so it appears that the fusion module is using CPU encoding only.

The laptop specs are probably not nearly the best but the fact the render engine uses the GPU compute engines for normal video but not Fusion material is rather frustrating:

CPU Type
AMD Ryzen 5 2500U with Radeon Vega Mobile Gfx
System Memory
8 GB
OpenCL™ Version
23.20.815.7168

Any ideas?

Wow, you got Resove to run in 8GB of memory *and* were able to use the Fusion tab?

I don't think anyone would expect it to run at all, let alone at an acceptable speed, on such little memory.

Wow, you got Resove to run in 8GB of memory *and* were able to use the Fusion tab?

I don't think anyone would expect it to run at all, let alone at an acceptable speed, on such little memory.

Resolve runs fine, color tab works well for adjustments/tacking/masking etc and so far have been shown in real time. Editing, cutting etc works flawlessly too. The only problem I have is the Fusion tab not utilising the compute GPU's.

To be fair all my work is 1080p not 4k and definitely not 8k, as it is for delivery via YouTube into websites as video backgrounds and a few small promo/showcase videos for large screen displays viewed at distance.

I have one of the Ryzen Envy x360 with the 2500u and I get constant GPU glitches in the GUI. Does yours do the same thing?

Not recently, I'm using driver 23.20.815.7168 dated 06/08/2018 from the Microsoft Driver store here: download.windowsupdate.com/c/msdownload/update/driver/drvs/2018/08/b8dba03f-6095-4c0a-a982-968e69f5a06d_f61a6059132692d461f249ec5e64c7da20ec32b6.cab

I get crashes on waking from sleep, but other than that its stable(ish). Just doesn't seem to make use of the GPU compute engine in the Fusion tab ( or if it is its very poorly optimised ).