diff --git a/async_tkinter_loop/async_tkinter_loop.py b/async_tkinter_loop/async_tkinter_loop.py
index 20a61a9..0ad27f7 100644
--- a/async_tkinter_loop/async_tkinter_loop.py
+++ b/async_tkinter_loop/async_tkinter_loop.py
@@ -26,7 +26,8 @@ async def main_loop(root: tk.Tk) -> None:
         except tk.TclError:
             break
 
-        await asyncio.sleep(0.01)
+        interval_ms = _tkinter.getbusywaitinterval()
+        await asyncio.sleep(interval_ms / 1000)
 
 
 def get_event_loop() -> asyncio.AbstractEventLoop: