Game skips time after 0.5.5b and 0.5.5c updates when using the old save

Issue description

After two latest updates my old save is kinda broken - game constantly skips time, causing camera teleportation, animation resets, units teleportation and so on. It's not related to FPS, i still have good FPS, but looks like simulation thread hangs out from time to time (and camera too). Not sure how else to describe.
Youtube preview: https://www.youtube.com/watch?v=qFOs77ocYpw (high quality will be availible in 30 minutes or so)

Reproduction steps

1. Load attached save and unpause
2. Move camera
3. Observe time skips

Game version and build number

v.0.5.5c (B258)

Operating system

Windows

Attachments

123.save

Files not imported: 123.save

Seems like it's not related to the save, but turning off vsync solved that issue for me.