RLSW - Software rendering performance is bad

[knuxyl]

I have started a C game with raylib and tried out RLSW. I am drawing a rounded rectangle and an image to a rendertexture2d, scaling it to fit the window, and drawing it to the window. i am also playing an ogg file. there is no computation done on idle, everything is on window resize.
with RLSW I get about 22 FPS,
with GLFW I get about 17000 FPS.
There really isn't much going on, I would think RLSW would be a little faster than that, on a 7950X3D Gentoo system. Am I missing something? This is completely impractical to use on any system so I think I may be missing something.
I have one of the top end AMD cpus and the PR for this mentions RISC-V being a targeted platform but I can almost guarantee there isn't a RISC-V platform able to get above 10fps out yet. This is why I think I'm doing something wrong with the compilation step or something.

I can play Half Life 2 on software rendering without an issue on this machine.

Once the game actually starts doing something I can see dropping into single digit FPS. I know for sure software rendering is absolutely viable on almost all modern cpus for simple 2D games. Has anyone had success with RLSW?