“I did delete the preferences and it didn’t seem to change the behaviour, but I did lose my nice screen layout presets which is a bummer.”
ah, yes, it pays to have a good clean set of preferences backed up.
“I have multiple sequences of progressive edits in this big project, would I free up some ram if I deleted these older sequences?”
no.
“What are other ways I can free up RAM in the project?”
its not about the project really, its more about the amount of RAM that FCP is using for displaying the RT effects.
there is some control over that in the FCP system prefs / render & cache tab.
“And how do I disable the green bar RT effects? This is a new concept to me.”
yes, i guess i say that like it’s a simple thing to do, and it can be depending on your timeline, and what you are editing
for me it has been simple enough, as i work on projects with lots of subtitles. they soak up the RT, and what happens is the first 50-100 or so might be green, then they go orange, and playback is choppy.
but as the subs are all on one track they can be dealt with easily (it pays t be organised)
the trick i use is to have a blank track (with visibility turned off) above the subtitle track, and i just bump the earlier subs up into that track. (select them with the track tool, and option + up arrow)
as i say the remaining ones need a little reminder, so they get bumped up too, and then bumped back down, and FCP re-thinks the RAM allocation for the green effects.
so that works for me.
of course RENDERING the earlier part of the timeline would also work!
so there’s a couple of ideas that might help
nick