Im surprised you’re able to manage running the Editor on Vulkan with only a 2GB card. There is some issues currently with running out of video memory on lower amounts such as 2GB. I would be curious to see a perf result of the engine running for something like 30s opengl vs vulkan to try to capture what is the major bottle neck here:
perf record -g -p sleep 30
Should run it for 30 seconds, and from there you can take a look at it with:
perf report -g --no-children (–no-children for just the leaf)
and just show the highest % or like 10-20 entries from there
Currently the opengl drivers do a better job at managing memory versus the vulkan driver but you should see an issue in increased video memory but odd to see a direct lower performance. Something I have not seen