Kernel 7.3 should help here, with VRAM management patches coming that will help with low VRAM GPUs. It’s not released yet, however.

Should work with any application that either uses Vulkan directly, or is converted to Vulkan by a translation layer. Which is almost everything by default except OpenGL, but that can be converted to as well using Zink.

But whether it has a beneficial effect (and how much) will depend on the application, whether you are GPU limited, your monitor config, and so on.

An interesting technical dive into input latency on Linux, both locally and concerning network streaming.