UPS drops to 30 and generally acts strange. Please help.

[Bushdoctor]

Good day,

My game behaves very strange. My UPS constantly drops from 60 to 30, slowing down my game to half the speed, while the FPS stays at 30, or sometimes even a bit higher.
It gets stranger: The game runs at 60 UPS when I'm completely zoomed out, but as soon as I zoom in on my character, it drops to 30 and stays at 30. When I zoom out, the UPS goes up again.

Also, when I'm zoomed in on my character and the game is running at 30 UPS, and I hit F5 to overlay the screen that shows all the info, my UPS shoots back up to 60, but when I close the F5 screen,
the UPS immediately drops down to 30 again.

This drop in UPS also happens in MP games, but not nearly as often as when I'm playing solo. I'm not sure if that means anything.

Advice would be really welcome because this basically ruins the game for me. :/

Thanks.

[kovarex]

Can you post your log? Did you try both settings of vsync?

[Bushdoctor]

I just realized I probably posted this in the wrong section. My bad.

I will try to do the Vsync thing. Thanks.
If that fails, I will find out how to post a log.
Thanks for the fast reply.

[Bushdoctor]

Yes! That totally solved my problem!
You sir, have saved the planet.
Thank you.

-Edit- Even my FPS went up considerably.