diff --git a/config.h b/config.h
index 118cc98..6cb5b06 100644
--- a/config.h
+++ b/config.h
@@ -7,18 +7,18 @@ public:
 };
 
 const uint8_t MPR_PADNUMS[] = {12, 12, 12, 12};
-const uint8_t THREASHOLD = 35;
+const uint8_t THREASHOLD = 32;
 
 touchblock touchmap[34] = {
     // Group A
-    {3, 4, 0}, // 1
-    {3, 0, 0}, // 2
-    {2, 4, 0}, // 3
-    {2, 0, 0}, // 4
-    {1, 5, 0}, // 5
-    {1, 0, 0}, // 6
-    {0, 4, 0}, // 7
-    {0, 0, 0}, // 8
+    {3, 4, -3}, // 1
+    {3, 0, -3}, // 2
+    {2, 4, -3}, // 3
+    {2, 0, -3}, // 4
+    {1, 5, -3}, // 5
+    {1, 0, -3}, // 6
+    {0, 4, -3}, // 7
+    {0, 0, -3}, // 8
     // Group B
     {3, 5, 0}, // 1
     {3, 1, 0}, // 2
@@ -72,6 +72,16 @@ const uint8_t RELEASE_THREASHOLD_OFFSET = 0;
 // NHDF = 1
 // NCLF = 16
 // FDLF = 4
+// if some regions get stuck easily, you can try the following values
+//   to make the system more sensitive to environmental changes
+// MHDR = 2;
+// NHDR = 2;
+// NCLR = 4;
+// FDLR = 0;
+// MHDF = 4;
+// NHDF = 2;
+// NCLF = 16;
+// FDLF = 2;
 // rising NHD is larger than falling NHD because rising is the release direction
 //   the rising changes are more likely to be environmental changes
 // rising NCL being smaller than falling NCL is because of the same reason
@@ -125,7 +135,7 @@ const uint8_t ELECTRODE_SAMPLE_INTERVAL = 0;
 // this smoothes out the signal and prevents false release
 //   however, a debounce value that's too high might cause releases that are too short to be missed
 // if the user notices too many false releases, try to increase this value. but don't set it too high
-const uint8_t RELEASE_DEBOUNCE = 1;
+const uint8_t RELEASE_DEBOUNCE = 0;
 
 // range: 0 - 7
 // when DT + 1 samples are higher than the threshold, the electrode is touched
diff --git a/maimaiTouchControl.ino b/maimaiTouchControl.ino
index 168e28b..25dbba6 100644
--- a/maimaiTouchControl.ino
+++ b/maimaiTouchControl.ino
@@ -30,7 +30,7 @@ void setup()
   mpr[1].begin(0x5B, &Wire);
   mpr[2].begin(0x5C, &Wire);
   mpr[3].begin(0x5D, &Wire);
-  Wire.setClock(400000);
+  Wire.setClock(100000);
 
   // config conversion