diff --git a/.github/CONTRIBUTORS.md b/.github/CONTRIBUTORS.md
index e1b1c24..96b5146 100644
--- a/.github/CONTRIBUTORS.md
+++ b/.github/CONTRIBUTORS.md
@@ -38,7 +38,26 @@ The following people have voluteered to test the beta release (pre-release). Tha
 ## Financial Contributions
 | Name | Contribution details |
 | --- | --- |
-| **Kevin** | A special thank you for contribution! :tada: |
-| **Eric** | A special thank you for contribution! :tada: |
-| **Thomas** |  A special thank you for contribution! :tada: |
-| **Marcel Schumann** | A special thank you for contribution! :tada: |
+| **Kevin** | A special thank you for your contribution! :tada: |
+| **Eric** | A special thank you for your contribution! :tada: |
+| **Thomas** |  A special thank you for your contribution! :tada: |
+| **Marcel S.** | A special thank you for your contribution! :tada: |
+| **Markus M.** | A special thank you for your contribution! :tada: |
+| **Lara** | A special thank you for your contribution! :tada: |
+| **Richard** | A special thank you for your contribution! :tada: |
+| **[David S.](https://github.com/piimp)** | A special thank you for your contribution! :tada: |
+| **Rene N** |  A special thank you for your contribution! :tada: |
+| **Koorathota** |  A special thank you for your contribution! :tada: |
+| **Christopher C.** | A special thank you for your contribution! :tada: |
+| **Stefan A.** | A special thank you for your contribution! :tada: |
+| **Florian B.** | A special thank you for your contribution! :tada: |
+| **Achint M.** | A special thank you for your contribution! :tada: |
+| **Felix J.** | A special thank you for your contribution! :tada: |
+| **Michael W.** | A special thank you for your contribution! :tada: |
+| **Dennis R.** | A special thank you for your contribution! :tada: |
+| **Max G.** | A special thank you for your contribution! :tada: |
+| **Sun L.** |  A special thank you for your contribution! :tada: |
+| **Martin K.** |  A special thank you for your contribution! :tada: |
+| **Simon K.** |  A special thank you for your contribution! :tada: |
+| **Roman F.** |  A special thank you for your contribution! :tada: |
+| **Lars L.**| A special thank you for your contribution! :tada: |
diff --git a/inkycal/display/drivers/epd_12_in_48.py b/inkycal/display/drivers/epd_12_in_48.py
index 52c82e6..334f121 100644
--- a/inkycal/display/drivers/epd_12_in_48.py
+++ b/inkycal/display/drivers/epd_12_in_48.py
@@ -151,7 +151,6 @@ class EPD(object):
         return buf
         
     def display(self, buf):
-        start = time.clock()       
 
         #M1 part 648*492    
         self.M1_SendCommand(0x13)
@@ -177,13 +176,10 @@ class EPD(object):
             for x in  range(0, 81):
                 self.S2_SendData(buf[y*163 + x])
                 
-        end = time.clock()
-        print("use time:%f"%(end - start))
         self.TurnOnDisplay()
 
     def clear(self):
         """Clear contents of image buffer"""
-        start = time.clock()
         self.M1_SendCommand(0x13)
         for y in  range(492, 984):
             for x in  range(0, 81):
@@ -203,8 +199,6 @@ class EPD(object):
         for y in  range(0, 492):
             for x in  range(0, 81):
                 self.S2_SendData(0xff)
-        end = time.clock()
-        print("use time:%f"%(end - start))
         self.TurnOnDisplay()
         
     """   M1S1M2S2 Write register address and data     """
diff --git a/inkycal/display/drivers/epd_12_in_48_colour.py b/inkycal/display/drivers/epd_12_in_48_colour.py
index 9467e8b..f364bd0 100644
--- a/inkycal/display/drivers/epd_12_in_48_colour.py
+++ b/inkycal/display/drivers/epd_12_in_48_colour.py
@@ -172,7 +172,6 @@ class EPD(object):
         return buf
         
     def display(self, blackbuf, redbuf):
-        start = time.clock()
                     
         #S2 part 648*492
         self.S2_SendCommand(0x10)
@@ -213,14 +212,10 @@ class EPD(object):
         for y in  range(492, 984):
             for x in  range(81, 163):
                 self.S1_SendData(~redbuf[y*163 + x])
-                
-        end = time.clock()
-        print("use time: %f"%(end - start))
         self.TurnOnDisplay()
 
     def clear(self):
         """Clear contents of image buffer"""
-        start = time.clock()
         
         self.S2_SendCommand(0x10)
         for y in  range(0, 492):
@@ -257,11 +252,6 @@ class EPD(object):
         for y in  range(492, 984):
             for x in  range(81, 163):
                 self.S1_SendData(0x00)
-                
-        end = time.clock()
-        print (end)
-        print (start)
-        print("use time: %f" %(end - start))
         
         self.TurnOnDisplay()
         
diff --git a/inkycal/display/drivers/epdconfig_12_in_48.py b/inkycal/display/drivers/epdconfig_12_in_48.py
index 4ebd371..4bc59a8 100644
--- a/inkycal/display/drivers/epdconfig_12_in_48.py
+++ b/inkycal/display/drivers/epdconfig_12_in_48.py
@@ -53,20 +53,12 @@ EPD_S1_BUSY_PIN  =19
 EPD_M2_BUSY_PIN  =27
 EPD_S2_BUSY_PIN  =24
 
-find_dirs = [
-    os.path.dirname(os.path.realpath(__file__)),
-    '/usr/local/lib',
-    '/usr/lib',
-]
-spi = None
-for find_dir in find_dirs:
-    so_filename = os.path.join(find_dir, 'epd_12_in_48_lib.so')
-    if os.path.exists(so_filename):
-        spi = CDLL(so_filename)
-        break
-if spi is None:
-    RuntimeError('Cannot find epd_12_in_48_lib.so')
+additional_driver_path = f"{os.path.dirname(os.path.realpath(__file__))}/epd_12_in_48_lib.so"
 
+if not os.path.exists(additional_driver_path):
+    RuntimeError("Inkycal cannot find the additional driver files for 12in48 3-colour")
+
+spi = CDLL(additional_driver_path)
 
 def digital_write(pin, value):
     GPIO.output(pin, value)