Daytona USA CCE white lines artifact
What's the full name of the game (including region) ? Daytona USA C.C.E. Net Link Edition (USA)
What's your frontend ? (standalone, libretro, ...) ? Libretro, core v.2.5.0
What's your OS ? (windows, linux, OSX, ...) ? Windows 10 x64
What's your hardware ? (CPU, GPU, ...) ? AMD Ryzen 5 2600, AMD RX 570, 16 GB RAM
What's the storage type of the game (official cd, burned cd or cd image) ? CD image
If applicable, what's the format of your cd image ? (cue/bin, ccd/img, iso, chd, ...) cue/bin
Are you using any setting different from default ? If so, precise CS renderer
Did this game work previously ? Do you remember when ? Is it happening with other games ? Doesn't happen with old GL renderer
If applicable, provide error messages, logs, screenshots, or whatever additional information that could help debugging this N/A
The white lines on the track and the cars in front look bigger and distorted on CS renderer. Also the game's performace isn't good specially if scaling is enabled.
Old OpenGL renderer:

CS renderer:

So taking your CS screenshot as reference, this is the matching screenshot of in OpenGL core :

And this is how the console looks at the same frame :

As you can see it's in fact in between the 2 cores, because if CS tends to draw some lines a bit too thick, OpenGL tends to be a bit too thin.
I see! Just wanted to point out that the cars in the distance look quite distorted on CS compared to the console anyway.
CS:

Taken from your console screenshot:

I hope the fix isn't too hard 👍
Daytona USA (not CCE) has the same problems.