So is this Thunder itself or some app it is deferring to whose config I should look at?
Basically videos start out dim for a few seconds until the video controls fade out. This means the first few seconds of every video are basically unwatchable, and with short videos this is all or most of the video. For example https://lemmy.world/post/17884719
Please refrain from posting bug reports to this community. You should instead submit them to the official bug tracker.
OK, but I was considering it more a request for help, as I don’t know yet whether it is really a configuration issue.
Understandable. I apologize for my previous comment. I didn’t fully internalize the intent of your post.