On November 20th there was an update and I forgot to disable it.
I tried rolling back by downloading the old exe file (and other BA2 files which got changed) from steam but all of a sudden 2 weeks worth of my recent save files became corrupted, I could still open them but when I save they instantly CTD.
I tried reinstalling the game and got the new version of F4SE, but the problem persisted.
I tried removing all of the mods and do a regular save but still it CTD.
I found the latest saved game where I could still save and not CTD, that is save_151, and I also included the latest bad save file, save_280. I have them uploaded in this dropbox, if anyone has the spare time and is willing to help you have my most sincere gratitude.
https://www.dropbox.com/sh/h3dqtf95i2sanph/AAAmQ00CN_GC9uudHdL9yw2Da?dl=0
I also have the plugin list here in these txt files.
save_151:
save_280: