[TL;DR Solution] Turn on Local save in MOD ORGANIZER by going Profile > Manage > Select Profile > Check the Local Savegames box. Then Click Transfer saves > Select your saves > Hit copy. So I was having save times that would freeze my game for up to 10 seconds at a time. At first I thought it was a consequence of script heavy mods, Dyndolod, or just the hand of gods punishing me for being addicted to skyrim yada yada... After reading through this thread, the explanation on file conversion for mod organizer made sense. The [solution] that solved my issue was turning on local saves for my profile in mod organizer. This has reduced my save times to around a second, back to how it was during vanilla for me. Hope this helps others sorry if necro thread.