Bug Audiosource (microphone) stops working after 10 seconds but it's set to last 1h

Hello everyone reading this, i am currently having an issue with my code. I am working on a game, where you control the character with the loudness of your voice. After working on it for a while i got everything to work fine on my pc. But when i sent it to two friends to test it, on one computer the microphone didn't even react and on the other one it worked fine for like 10-20 seconds and then stopped working again (both laptops with just the built in microphone). Has anyone else had this issue?
This is the code i use for the microphone

Code (CSharp):

1.     void Start()
2.     {
3.         InvokeRepeating("MicToAudioClip", 0, 3600);
4.      
5.     }

Code (CSharp):

1.     void MicToAudioClip()
2.     {
3.             audioSource = GetComponent<AudioSource>();
4.             audioSource.clip = Microphone.Start(Microphone.devices[0], true, 3600, AudioSettings.outputSampleRate);
5.             audioSource.Play();
6.     }

Does anyone have an idea what could have gone wrong?