Hello Someone can please try Eyetv 4 (8519) i was Mojave user before my mac M1 and i have downgraded my mac M1 from Monterey to Big Sur to try if it is better i have the same problem, lot of stuttering and dropped frames I have tried all channels and suprise, there is 3 channels i work fine and 34 channels lot of stuttering and dropped frames There is have tried all Eyetv version 4 found on Geniatech website, none is working i have checked in external hdd backu