diff --git a/speech_service/transcriber.py b/speech_service/transcriber.py
index 8d873a1..a68266d 100644
--- a/speech_service/transcriber.py
+++ b/speech_service/transcriber.py
@@ -12,5 +12,5 @@ class WhisperTranscriber:
         print("Whisper model loaded.")
 
     def transcribe(self, audio_file: str) -> str:
-        result = self.pipe(audio_file, return_timestamps=True)
+        result = self.pipe(audio_file, batch_size=4, return_timestamps=True)
         return result.get("text", "").strip()
diff --git a/telegram_bot/handlers/audio_handler.py b/telegram_bot/handlers/audio_handler.py
index c25e205..b883e59 100644
--- a/telegram_bot/handlers/audio_handler.py
+++ b/telegram_bot/handlers/audio_handler.py
@@ -50,6 +50,7 @@ async def handle_voice_and_video(message: types.Message, redis_service, storage_
         chat_id=message.chat.id,
         message_id=message.message_id
     )
+    os.remove(wav_destination)
     if text:
         await send_long_message(message, text)
     else: