As the title says, r_DisableRendering it not functional.
Using it on Release, Beta or Latest will cause FiveM to instantly crash when opening.
I’ve tested this across 3 different PC’s all with different GPU/Hardware setups.
Simply add +set r_disablerendering 1 to your startup options and this will occur.
Two other related edge-cases to consider would be the GetD3D11Device bits in DrawPerf (if settings were saved from the previous session) and the sharedD3D11 bits in OnConsoleFrameDraw.