# Cycleops magnus

**URL:** <https://forums.zwift.com/t/cycleops-magnus/11365>\
**Category:** Archived: Tips and Troubleshooting\
**Created:** [February 19, 2018, 3:56pm UTC](https://forums.zwift.com/t/cycleops-magnus/11365 "2018-02-19T15:56:18Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Gary\_Crowder](https://avatars.discourse-cdn.com/v4/letter/g/8edcca/32.png) [@Gary\_Crowder](https://forums.zwift.com/u/Gary_Crowder)\
**Post date:** [February 19, 2018, 3:56pm UTC](https://forums.zwift.com/t/cycleops-magnus/11365/1 "2018-02-19T15:56:18Z")

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Speed is all over the place.&nbsp; I can hold steady power and cadence&nbsp;and the speed is all over the place.&nbsp; It goes way up and way down and usually stays at 2 or 3 mph.&nbsp; I have read many posts.&nbsp; I am using Ant connection and calling the trainer FARIS SE.&nbsp; Please help to get my speed in a normal range.&nbsp; I have calibrated successfully multiple times.

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**Author:** ![Paul\_Allen](https://sea2.discourse-cdn.com/gozwift/user_avatar/forums.zwift.com/paul_allen/32/414916_2.png) [@Paul\_Allen](https://forums.zwift.com/u/Paul_Allen)\
**Post date:** [February 19, 2018, 4:00pm UTC](https://forums.zwift.com/t/cycleops-magnus/11365/2 "2018-02-19T16:00:18Z")

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Speed within Zwift is determined by watts, weight entered, in-game bike used, in-game drafting and virtual elevation changes. Your speed within Zwift will change with the elevation changes even if you keep the same watts.