Is this just on one video track like V9 on your screen grab? You aren't trying to keep sync with audio or other tracks? If so sub sequence just that drag to a new sequence in a fresh empty bin. (or copy the whole sequence to an empty bin and delete a the other tracks. Now in the bin fast menu chose set bin display and tick show reference clips.

My advice is find somebody who's up on the current Avid version and modern workflows and pay them for some support. Workflows have changed, and processes have evolved and a whole lot of new terminogy has emerged. Fundementally the edit process is much as it was and MC is basically very similar to 15 years ago. Just with a whole bunch of new extra

If you have "normal" landscape HD then scaling for 9:16 is going to be a quality compromise. You have too many pixels in width so will need to crop and too few in height so you will add black letterbox ING bars or scale that will lower quality and further reduce the width. If you want portrait outputs you really need to aquire in portrait

The Transcoded media is only used for the required output for the current deliverable (and for an offline online workflow the initial proxy transcode would be well less than needed for the final output) The point is you camera masters are your archive masters. The Transcoded media is just temporary to achieve what you need now. Which flavour of DNxHR

If you transcode in Avid with the DNxHR codec you have the choice of retaining the source resolution or scaling to the project resolution. The choice is yours. Obviously retaining source resolution makes larger files that are more demanding on you system. Re archiving and future proofing you have the original source files. You can easily make a 1080

Have you tried linking the camera sources into a project and actually editing with it yet? You need a powerful system to manage 4K in realtime. 16GB RAM is the bare minimum to run MC you need a lot more RAM to handle 4K. Also you need very fast drives to access the content in real time. The choice of project settings is normally determined by what you

If you need to conform for the sound mix and include those deleted audio tracks how could they be re-added? WHat happens if you re AMA link those sources back in? are the deleted audio tracks ignored (how can you ever get them back in that project) or do they re-appear and over write the original deletion? The reason its not a simple process is deleting

A more powerful GPU will benefit real time effects (that support GPU real-time playback) "but MC just won't see a second GPU.

It says a lot for the development since 2018 that so few industry users have upgraded. We are told that the development is what users want and things like improved colour correction reinstatement of a working simple tile tool to just aren't warranted. And yet the industry disagrees. Is the conclusion that the previous Avid market of users isn't

My money is on it being a duplicate bin. Create a new bin and name it to match the problem bin but with 2 on the end. Open the problem bin and copy all the contents of that bin onto the new bin. Now put that problem bin into a don't use folder (and delete later if all good) Now test opening this new bin and the other bin.