Show Frame time

src/display/ui/uifps.c

@@ -25,7 +25,8 @@ void uiFPSRender(void) {
   snprintf(
     buffer,
     sizeof(buffer),
-    "FPS: %d",
+    "%.2f/%d",
+    TIME.delta * 1000.0f,
     (int32_t)fps
   );