[macos]newer dolphin versions not using cpu time

[mimimi]

Does it run slower now? Degasus made a great contribution on 4.0-xxxx, so the gpu thread didn't run a busy loop anymore and instead put the thread to sleep when waiting. It didn't impact performance, well on desktops it didn't. On notebooks with APUs, it is supposed to increase the performance, because of less power consumption and thermal throttling being triggered later.