Nvidia GeForce Driver 441.87 lets you limit frame rate
Limit FPS – Crinrict's Sims 4 Help Blog
The new NVIDIA Frame Limiter natively supports any frame rate value. It's exposed in HEX in NVIDIA Inspector. Here is XCOM 2 capped at 30fps. You just need to convert your target
NVIDIA's new GeForce drivers include a framerate cap to reduce latency | Engadget
How To Set Framerate Limit In Nvidia Control Panel