diff --git a/PC-optimization.md b/PC-optimization.md
index 2263efe..1c5c3a7 100644
--- a/PC-optimization.md
+++ b/PC-optimization.md
@@ -162,5 +162,8 @@ If you have no choice but to run on a laptop:
 * Popn tends to run at whatever refresh rate you had set on the desktop. Use `-graphics-force-refresh 60` to force 60Hz.
 * If you experience stuttering every couple seconds, try forcing triple buffering (`-vsyncbuffer 3`).
 
+## jubeat
+ * Older versions of Jubeat (Copious and below?) tend to launch at the wrong FPS (41FPS instead of 30FPS). Supposedly, running it on Windows 7 (and below) fixes this problem.
+
 # Further reading / Reference
 This page is loosely based on https://iidx.org/infinitas_pc.