diff --git a/emu.js b/emu.js
index 9df7f9e..86d6c40 100644
--- a/emu.js
+++ b/emu.js
@@ -7,10 +7,11 @@ const RXTAIL = 0x10c;
 
 const SYSREADY = 0x110;
 
-const POLL_INTERVAL_MS = 20;
 const DOT_INTERVAL_MS = 120;
 const PERIPHS_SIZE = 0x200;
 
+const POLL_INTERVAL_MS = 5;
+
 const COLS = 80;
 const TAB_WIDTH = 8;