as i already have x570 motherboard and ram bought like 4 months ago i'm planning to get either 3900x or 3950x from AMD which both are high core count cpu's and wanted to ask how much cores does x265 or hevc encoding can handle? i know that my used program can max out 8 core cpu (tested with friends ryzen 7 3700x) which speeds up video encoding... also another question would be - why do people on other topics say ''Note that quality diminishes as the number of cores/threads used to encode a video file increases. Once that number reaches the double digits, the quality decrease starts to become noticeable. '' why quality should decrease, if encode is being done twice faster because of more cores on same preset and same settings are people suggesting that high core count cpu cannot be used with x265 to produce good encoding results? thus i'm on BIG dilema here
also please simplify the answers if possible
thanks