I am testing Karma on a heavy setup. with Non-Commerical version. I wasn't able to render a sequence of exr. 18.0.324
I ended up render a single frame from the viewport and save it as exr. However, I am getting a really noisy image, with additional issue like Black patch or pixel. At sample rate 512. over 3 hours render on a single frame. below is the example.
Another issue id with Depth pass or any other AOV really saved out from the viewport render, it looks like been squeezed and repeated. which doesn't match the beauty pass.
Please see below