Warning. Render Errors (Artifacts) ans Audio Drops with Smart Rendering (ProRes, AVCIntra)

Hey folks. It does not make sense, but since one of the latest updates CC2022 some of my exported files have artifacts (digital hits) and audio drop outs.

Smart rendering shoud prevent from additional QC, but Premiere and/or AME does not do the job very well. We recognized 1 frame audio outs and digital video artifaces.

There are no render processes (output parameters are exectly the same like input (resolution, codec, color space, ...) and there is no preview), so I have no clue why this happens.

Right now we are back on CC2021, because the errors are completely random. I found no other users, but we tested different workstations. So it seems to be a software problem.

We are on iMacPro MacOS 10.15.7 and used the latest version of Premiere and AME.