# Variable dt causes game to run twice as fast (DEF-3146) (SOLVED)

**URL:** <https://forum.defold.com/t/variable-dt-causes-game-to-run-twice-as-fast-def-3146-solved/15827>\
**Category:** Bugs\
**Created:** [January 16, 2018, 2:20pm UTC](https://forum.defold.com/t/variable-dt-causes-game-to-run-twice-as-fast-def-3146-solved/15827 "2018-01-16T14:20:49Z")\
**Posts on this page:** 1\
**Showing post:** 20

<div class="post-metadata">

**Author:** ![Johan\_Beck-Noren](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/johan_beck-noren/32/2622_2.png) [@Johan\_Beck-Noren](https://forum.defold.com/u/Johan_Beck-Noren)\
**Post date:** [April 17, 2018, 8:04am UTC](https://forum.defold.com/t/variable-dt-causes-game-to-run-twice-as-fast-def-3146-solved/15827/20 "2018-04-17T08:04:15Z")

</div>

We added ticket DEF-3146 for tracking this issue, but no progress so far I’m sorry to say.

As a first step we talked about better documenting how vsync, variable\_dt and monitor refresh rate play together in Defold.

As the problem is described in this thread it definitely seems like a problem with how we measure time, perhaps too low os timer resolution. We are working on it!

---

_[View the full topic](https://forum.defold.com/t/variable-dt-causes-game-to-run-twice-as-fast-def-3146-solved/15827)._