Use p1/ll and hq/p7 nvenc depending on situation. #496

Job	Run time
Build windows-latest \|\| SHARED=OFF \|\| PLATFORM=GLFW	27m 28s
Build windows-latest \|\| SHARED=OFF \|\| PLATFORM=libretro	23m 37s
Build windows-latest \|\| SHARED=OFF \|\| PLATFORM=KHR_DISPLAY	15m 22s
Build windows-latest \|\| SHARED=ON \|\| PLATFORM=GLFW	15m 8s
Build windows-latest \|\| SHARED=ON \|\| PLATFORM=libretro	14m 41s
Build windows-latest \|\| SHARED=ON \|\| PLATFORM=KHR_DISPLAY	14m 43s
Build ubuntu-latest \|\| SHARED=OFF \|\| PLATFORM=GLFW	27m 55s
Build ubuntu-latest \|\| SHARED=OFF \|\| PLATFORM=libretro	21m 33s
Build ubuntu-latest \|\| SHARED=OFF \|\| PLATFORM=KHR_DISPLAY	32m 24s
Build ubuntu-latest \|\| SHARED=ON \|\| PLATFORM=GLFW	16m 57s
Build ubuntu-latest \|\| SHARED=ON \|\| PLATFORM=libretro	16m 10s
Build ubuntu-latest \|\| SHARED=ON \|\| PLATFORM=KHR_DISPLAY	23m 42s
	4h 9m 40s

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