Still early days, but I am running a Vegas 19 and Vegas 20 (365) benchmark and my new Alder Lake Intel PC (i9-12900K with RTX 3090) is rendering slightly slower than my old i9900k with RTX2080 TI, which is weird as my new PC runs almost 50% faster in 3DMark.
So, I started investigating, and now I am able to render Vegas 20 almost 2x faster with my new PC IF the task manager is running concurrently with Vegas during the rendering (eg. showing all the cores ...)
Is this some Vegas-Windows 11 core affinity or scheduling issue P-core E-core? It can be reproduced, and it seems independent of the use of the graphics card or not (Intel rendering or NVENC).
Can someone else confirm this with an Alder Lake Intel processor and Windows 11?
Updated 15/9/2022, read further, solution is to limit Vegas to P-cores...