I have the exact same issue. I loved being able to do time-lapse screen recordings of my AE work on mac using ScreenNinja (https://getscreenninja.com), which allowed you to set recording and playback framerates and worked flawlessly, outputting small mp4 files.
I can’t seem to find an equivalent program for windows.
OBS lets you set recording framerate but then still spits out a 6 hour video if I recorded my work all day.
CamStudio is sketchy, uses more processor power than I’d like and sometimes crashes in weird ways causing my screen colors to invert. Plus the output videos are larger than they should be.
Any suggestions?
Thanks!