Live TV Transcode Struggling Despite Modern Hardware (i5 8500)

I am having a lot of issues with transcoding live TV for remote viewing, the server I am using is a 2019 21.5inch iMac with an i5 8500 6 core CPU. No matter if its software or HW transcode, it can't seem to get past half speed remux, meaning the video is constantly stopping to buffer the transcode. The video is from a HDHomerun on the network. Looking at my logs I am seeing a lot of corrupted packets.