gears: add a warning about refresh rate limitation
diff --git a/clients/gears.c b/clients/gears.c
index 19165e7..aee0357 100644
--- a/clients/gears.c
+++ b/clients/gears.c
@@ -435,6 +435,7 @@
 
 	gettimeofday(&tv, NULL);
 	gears->last_fps = tv.tv_sec * 1000 + tv.tv_usec / 1000;
+	printf("Warning: FPS count is limited by the wayland compositor or monitor refresh rate\n");
 
 	glEnable(GL_NORMALIZE);