I run EyeTV 4 under Corinna (macOS-X.15.7) on a Mac mini Server with 2,6 GHz Quad-Core i7 + 16 GB Memory (Intel HD Graphics 4000)
Should be sufficient - Shouldn't it ?
I do have Netstream4SAT & "old" (single-channel) Netstream (coupled with a EyeTV FreeTV)
Same effect with "old" EyeTV Netstream! Delivers HD with EyeTV 3 - but not with EyeTV 4 !