We recently upgraded Wowza Streaming Engine to 4.1.1 from 4.0.4 and we are seeing degradation in video quality and blockiness in the video after upgrade.
We have this setup where we are running Wowza on AWS ec2 with GPU enabled boxes, and we are pushing RTSP/RTP stream to Wowza and publishing RTMP to akamai from wowza.
I downgraded after upgrading and I couldn't see the issue, but with upgrade without any changes on the RTSP side we see the issues.
Also tried disabling the GPU on the box to make sure that its not the issue with drivers and i can still see lower quality with the same template.
Here is the transcoder template we are using : https://bluejeans.box.com/s/yzltf5sx...ih3362fzcbzjd1
Let me know if you need more information on this.