Background:
- “Could not complete your request because there is not enough memory (RAM)”
- Unable to use Filter – Render – Lighting Effects
Solutions:
“Could not complete your request because there is not enough memory (RAM)”
For some reason this error kept showing up even though I have over 100GB of RAM available. The easiest solution for me was adding the OverridePhysicalMemoryMB DWORD value in the registry.
Run regedit.exe, go to
HKEY_CURRENT_USER > Software > Adobe > Photoshop > [YourVersionOfPhotoshop]
in the right side pane, create a DWORD value named OverridePhysicalMemoryMB and set its value to the desired RAM size. For example, 32768 (1GB = 1024MB, thus 32GB here).Unable to use Filter – Render – Lighting Effects.
This one could involve multiple issues. If your GPU is shown as Unknown GPU under Edit - Preferences - Performance, then you’d have to figure out if it’s because of an unsupported GPU, graphics driver, or other related GPU issues. For example, originally I tried to use Photoshop in one of my VMs but VMware Workstation’s VMware Virtual SVGA 3D Graphics Adapter showed as Unknown GPU and it seems that VMware Workstation is unable to perform GPU passthrough.
If the GPU is not the source of the problem and you’re experiencing issues when trying to use Lighting Effects to add Spot Light effect (for example, on my computer, after launching the tool it only shows a tiny area of lighting and no matter how you adjust the sliders the lighting effect won’t change accordingly, and the lighting area resizing doesn’t work either), then try going to:
Edit - Preferences - Technology Previews, and check Deactivate Native Canvas, and restart Photoshop. Mine worked flawlessly thereafter.