4C/8T or 6C/6T

[TheDreadPirate]

Even for dedicated GPUs, transcoding and tone mapping 4K HDR content is a heavy lift. IMO, you should keep the 4K files in a separate library. For the users that have 4K HDR capable setups, its there. For everyone else, keeping it separate ensures they don't accidentally forget to switch which version they are watching.

For an Intel iGPU, 3-4 simultaneous users, even if all are transcoding, is 100% doable.