diff --git a/steamfiles/appinfo.py b/steamfiles/appinfo.py
index <HASH>..<HASH> 100644
--- a/steamfiles/appinfo.py
+++ b/steamfiles/appinfo.py
@@ -179,6 +179,8 @@ class AppinfoDecoder:
         return byte
 
     def read_string(self):
+        # This method is pretty fast, provided we iterate over a memoryview.
+        # It's also easier to read then the most performant ones, which is more important.
         for index, value in enumerate(self.data[self.offset:]):
             # NUL-byte – a string's end
             if value != 0:
Add a bit of an explanation to a string-parsing function