This suggests that multithreaded rendering leads to more consistent and smooth performance and less FPS drops when you play Fortnite. The general rule for multithreaded rendering is that if you have a CPU with 4 or more cores then you will most likely benefit from turning it on.

Does multithreaded rendering help FPS?

I tried disabling multithreaded rendering and I got around 20 FPS increase. In most it's a no-brainer to leave this setting on but in Valorant it made my 4-core CPU perform better. I still dip below 144 FPS, while playing on 1600x900 everything lowest possible but it still helped and might help other people even more.

Should I turn on multithreaded rendering Valorant?

If you're playing VALORANT on a high-end device, you may want to turn on Multithreaded Rendering – a video setting that can improve CPU performance and graphics quality on high spec devices (you can get more specifics in these patch notes).