I have had stable and reliable results with my timer B values set to a much larger number (large enough for me to overcrank from 24fps to 45fps and higher using low light method)... but with the values from your table, this is as high as we can go, I'm afraid....
So, it seems to me that these are our options:
1. Leave the values as they are (since you have confirmed them to be safe) and leave the pull request unmodified in hopes that it will be merged as soon as possible, to fix nightly builds
2. Backout the changes in the pull request and do more testing to see if it can be pushed further (just in case a mistake was made when you made the table initially) in hopes that we can agree on safe values that allow for overcranking to at least 35fps
3. Modify values in pull request now so that it can be cranked to at least 35fps (and change them later if anyone else experiences artifacts/problems)
I think option 3 would be ok, since they were initially set to a much higher value anyways, what started this whole "intentionally breaking nightlies" thing was that someone reported an issue, and Alex noticed that the values were wrong.
I think the values for timer A are good, and .616 is an acceptable limit, but I am pretty disappointed with the values of timer B. I would like to use a value that at least allows us to overcrank to the limit of the encoder. The only time I experience artifacts is when The shutter speed is accidentally set too low, but I usually use an 180 degree shutter (because I'm a video guy) so I guess maybe I didn't run into the same stuff you were seeing with whatever shutter speed or FPS override method you used when you made your table.
Would you be willing to do some more testing to see if any of the values in your table can go a little higher? I would recommend keeping your shutter angle as close to 180 degrees (or fps*2) when testing for timer B
I'm sorry to ask you to do this again, unfortunately I was not involved in the conversation when you made the table initially.
Also, do people want lower fps than .616 or is this good enough?