diff -r 18de2af03531 -r d3285aed65b3 test/snake.c
--- a/test/snake.c	Thu Mar 28 23:30:21 2024 +0100
+++ b/test/snake.c	Fri Mar 29 00:03:25 2024 +0100
@@ -29,18 +29,17 @@
 #include <cx/printf.h>
 
 static void update_fps_counter(AscSceneNode *node) {
-    // addition and multiplication is more efficient testing for zero
-    // at an unnoticeable cost of imprecision
-    static unsigned last_fps = 0u;
-    static unsigned debounce = 999u;
-    unsigned fps = 1000u;
-    debounce += asc_context.elapsed_millis;
-    if (debounce >= 1000u) {
+    static uint64_t last_fps = 0;
+    static uint64_t debounce = ASC_NANOS_SECOND - 1;
+    debounce += asc_context.frame_nanos;
+    // only update text every seconds
+    if (debounce >= ASC_NANOS_SECOND) {
         debounce = 0;
-        fps /= asc_context.elapsed_millis;
+        uint64_t fps = ASC_NANOS_SECOND;
+        fps /= asc_context.frame_nanos;
         if (fps != last_fps) {
             last_fps = fps;
-            snprintf(asc_text_data(node)->text, 9, "%u FPS", fps);
+            snprintf(asc_text_data(node)->text, 11, "%"PRIu64" FPS", fps);
             asc_node_update(node);
         }
     }
@@ -49,7 +48,7 @@
 static void create_fps_counter(void) {
     asc_set_font(asc_font(ASC_FONT_REGULAR, 24));
     asc_ink_rgb(255, 0, 0);
-    AscSceneNode* node = asc_text(10, 10, "XXXXX FPS");
+    AscSceneNode* node = asc_text(10, 10, "XXXXXXX FPS");
     asc_scene_add_behavior(node, update_fps_counter);
     asc_scene_add(&asc_window_active->ui, node);
 }