Incremental Iterative RAM Preview
We commit lots of RAM Previews daily and oftentimes, we view a RAM preview on repeat. Going from Zero to when the RAM Preview is ready for viewing takes x number of seconds. Oftentimes, we can make do without a full, fps preview when we just want a quick look to ensure what we're doing is going as planned - things moving in the right direction; general layout looks as expected and layers are looking as expected. For this, a RAM Preview in 2s or 3s is sufficient. However, user experience can be improved if we combined these truths with a new performance feature, Incremental Iterative RAM Preview.
The premise is the have the first (or as few as possible) RAM Preview viewed in 2s/3s and while the user views a repeat/iteration of the RAM Preview, AE continues processing the in-between frames and automatically plays back a preview with more frames, closer to full fps.
To make this more work in a more user-friendly manner; in the Preview Panel, place the Skip Widget to the right of the playback buttons and to the right of the Skip Widget, place a checkbox to enable Incremental iterative RAM Preview. This checkbox is greyed out until the Skip Widget is great than 0 - just to make matters more salient to the user.
Mike Choo commented
It would be great if this was an option for the speculative preview caching - to have AE run through and cache on 2s for example, then run through again and fill in the blanks.