Frame drop when Using GMSK en UDP

Hello,

I am trying to stream (de)mod a live video with to use of GNU radio. from my windows 10 PC. These are the steps I follow:

1)Steam using OBS to an RTMP server

2)Use ffmpeg to get this stream form OBS and send it to UDP (port:9999 ; IP:127.0.0.1).

3) Do GMSK mod en demod

4) Save it to a file sink

Here is the program:

I also get a warning from GNU:  WARN: Too much data; dropping packet. But I think this is because my PC is to slow.

If someone can help it would be appreciated.

Best regards,

Q