Since build 1441, which came with the Unity version 2022.3.22f1 upgrade and a mention of a potential "slight performance uplift", I have noticed performance to be slightly worse.
When switching between live and open beta (1444), I consistently notice up to 3-10% lower FPS in more intensive worlds where my FPS doesn't get capped.
For example, 75 fps vs. 67 fps when comparing in the world "Goodbye Is Not the End". Here are some more sample worlds to try:
I actually started testing this because I was crashing out of SteamVR very frequently starting from build 1441, when opening the photo or stream camera. I can't reproduce these crashes consistently right now, but I can reproduce the FPS drop very consistently.