# When performing Jam Tracks, it may unexpectedly lower the BPM and raise it again. **URL:** \ **Category:** Issues and Bug Reporting\ **Tags:** open, fortnite-creative, unreal-editor-for-fortnite, fortnite\ **Created:** [March 17, 2026, 9:02pm UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815 "2026-03-17T21:02:30Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![TheGamerSide67](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thegamerside67/32/1062962_2.png) [@TheGamerSide67](https://forums.unrealengine.com/u/TheGamerSide67)\ **Post date:** [March 17, 2026, 9:02pm UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/1 "2026-03-17T21:02:30Z")
### Summary When performing with Jam Tracks, the BPM may lower audibly, before rising back up again. Almost as if it is “catching up” after it lags behind. ### Please select what you are reporting on: Creative ### What Type of Bug are you experiencing? Assets ### Steps to Reproduce Go into any Creative island Perform a Jam Track Change the BPM of the track ### Expected Result The Jam Tracks should maintain a constant BPM, and not fluctuate unless otherwise forced by the player. ### Observed Result The BPM fluctuates without player input. ### Platform(s) PC, Xbox ### Video [![](https://d3kjluh73b9h9o.cloudfront.net/original/4X/5/7/5/5752840c2b483b639888f800acd2bd614cb50b0b.jpeg "Fortnite 2026 03 17 15 55 24") ](https://www.youtube.com/watch?v=nA5Z1lg1vyw) ### Additional Notes The video is 3 minutes long, the issue persists numerous times within the single jam session. Frame rate does not effect this issue. This issue is also not present in Jam Stage. ---
**Author:** ![ChesseTheWasp](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/chessethewasp/32/1044816_2.png) [@ChesseTheWasp](https://forums.unrealengine.com/u/ChesseTheWasp)\ **Post date:** [March 17, 2026, 9:15pm UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/2 "2026-03-17T21:15:33Z")
yep i’ve also noticied this. @thegamerside67 make sure to hit vote on your own post so that it gets seen by their bot and then put as a ticket into Epic’s bug reporting software ---
**Author:** ![TheGamerSide67](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thegamerside67/32/1062962_2.png) [@TheGamerSide67](https://forums.unrealengine.com/u/TheGamerSide67)\ **Post date:** [March 17, 2026, 9:21pm UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/3 "2026-03-17T21:21:38Z")
But you only get 300 upvotes, do they refresh after a while? ---
**Author:** ![ChesseTheWasp](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/chessethewasp/32/1044816_2.png) [@ChesseTheWasp](https://forums.unrealengine.com/u/ChesseTheWasp)\ **Post date:** [March 17, 2026, 9:31pm UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/4 "2026-03-17T21:31:23Z")
yes they get returned to you after the thread automatically close after 6 months. Also if you keep posting helpful bug reports they bump up how many threads you can vote on at a time to 5000. I don’t think the votes on suggestion threads automatically get returned but im also not sure if the votes matter as much on those. ---
**Author:** ![TheGamerSide67](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thegamerside67/32/1062962_2.png) [@TheGamerSide67](https://forums.unrealengine.com/u/TheGamerSide67)\ **Post date:** [March 19, 2026, 11:40pm UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/5 "2026-03-19T23:40:36Z")
bumpers ---
**Author:** ![TheGamerSide67](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thegamerside67/32/1062962_2.png) [@TheGamerSide67](https://forums.unrealengine.com/u/TheGamerSide67)\ **Post date:** [March 21, 2026, 8:08pm UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/6 "2026-03-21T20:08:46Z")
This issue seems to have been resolved with the new update. I will continue to monitor it just in case, and if it is still an issue, I will upload another YouTube link to showcase the issue. ---
**Author:** ![TheGamerSide67](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thegamerside67/32/1062962_2.png) [@TheGamerSide67](https://forums.unrealengine.com/u/TheGamerSide67)\ **Post date:** [March 24, 2026, 1:42am UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/8 "2026-03-24T01:42:16Z")
Update, the issue is not resolved. ---
**Author:** ![TheGamerSide67](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thegamerside67/32/1062962_2.png) [@TheGamerSide67](https://forums.unrealengine.com/u/TheGamerSide67)\ **Post date:** [March 29, 2026, 3:02pm UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/9 "2026-03-29T15:02:49Z")
Proof the update is unresolved. This is in the HUB so latency is not the issue. [](https://www.youtube.com/watch?v=5lRAyJV57WY) ---
**Author:** ![Flak](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/flak/32/769441_2.png) [@Flak](https://forums.unrealengine.com/u/Flak)\ **Post date:** [April 2, 2026, 6:19pm UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/10 "2026-04-02T18:19:15Z")
Is this still happening after 40.10? If so, could we get your logs and island code? Would also be great to have a detailed outline of your steps to reproduce the issue. Thank you @TheGamerSide67! ---
**Author:** ![TheGamerSide67](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thegamerside67/32/1062962_2.png) [@TheGamerSide67](https://forums.unrealengine.com/u/TheGamerSide67)\ **Post date:** [April 2, 2026, 6:21pm UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/11 "2026-04-02T18:21:01Z")
It’s not specific to an Island code, it just happens when performing Jam Tracks for an extended period of time. The best reference I can give, is about 10 minutes into a session. It’s random, and can happen earlier if you are constantly changing the BPM or doing full song resets without stopping the Jam. If it happens again, where would I go to get the logs? ---
**Author:** ![TheGamerSide67](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thegamerside67/32/1062962_2.png) [@TheGamerSide67](https://forums.unrealengine.com/u/TheGamerSide67)\ **Post date:** [April 2, 2026, 6:21pm UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/12 "2026-04-02T18:21:09Z")
@Flak ---
**Author:** ![Flak](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/flak/32/769441_2.png) [@Flak](https://forums.unrealengine.com/u/Flak)\ **Post date:** [April 2, 2026, 6:21pm UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/13 "2026-04-02T18:21:55Z")
Sorry about that, I forgot to add the details. > [@How to get your Fortnite logs](https://forums.unrealengine.com/t/how-to-get-your-fortnite-logs/682382): > > At times, we will ask you to send us your logs when you’re having an issue in UEFN. Here is how to do that: UEFN Logs Exit Fortnite. Click on Start or press the Windows Key + R. Type \AppData\Local\UnrealEditorFortnite\Saved\Logs and press Enter. Zip your Logs folder and attach the zip file to your reply. To find UEFN Logs while working in UEFN: Click “Output Log” at the bottom of the window. Click on “Setting” at the top right of the window Click “Open Source Location” Zip your Logs folder… ---
**Author:** ![TheGamerSide67](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thegamerside67/32/1062962_2.png) [@TheGamerSide67](https://forums.unrealengine.com/u/TheGamerSide67)\ **Post date:** [April 2, 2026, 6:24pm UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/14 "2026-04-02T18:24:14Z")
Thanks. And the more detailed reports that seems to make the issue appear more is as followed. 1. Enter any Creative mode 2. Play a Jam Track, I often use the Full Band to help make it faster 3. Change the BPM of the tracks, and change tracks so they are not the same 4. Sometimes it happens by just waiting, continue to Jam until then. 5. Pay close attention to the drums, or set a metronome at the expected BPM 6. Watch as the song will sometimes deviate from the set BPM when changing tracks, or replacing them with the Full Band mechanic. ---
**Author:** ![TheGamerSide67](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thegamerside67/32/1062962_2.png) [@TheGamerSide67](https://forums.unrealengine.com/u/TheGamerSide67)\ **Post date:** [April 2, 2026, 6:24pm UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/15 "2026-04-02T18:24:20Z")
I hope this helps ---
**Author:** ![TheGamerSide67](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thegamerside67/32/1062962_2.png) [@TheGamerSide67](https://forums.unrealengine.com/u/TheGamerSide67)\ **Post date:** [April 3, 2026, 1:37am UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/16 "2026-04-03T01:37:38Z")
@Flak Here is a new video that shows the issue as well as my logs now. [![](https://d3kjluh73b9h9o.cloudfront.net/original/4X/1/6/a/16a533075e291ad16168b5c1bfd414c0b9f092ec.jpeg "Fortnite 2026 04 02 20 28 17") ](https://www.youtube.com/watch?v=k3K2a-AZthg) [FortniteGame.log](https://forums.unrealengine.com/uploads/short-url/uQejTPbIz4EHDhOOE7PAogcV4JT.log) (11.1 MB) In case it helps further here are my PC specs. GPU; Nvidia 5070 12 GB OC MSI CPU; Intel i7-12700KF Monitors and Display; 2, 1080P 120 32 GB 4700mhz, 2 slots dual channel DDR5 ---
**Author:** ![TheGamerSide67](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thegamerside67/32/1062962_2.png) [@TheGamerSide67](https://forums.unrealengine.com/u/TheGamerSide67)\ **Post date:** [April 3, 2026, 4:46am UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/17 "2026-04-03T04:46:07Z")
Update, upon reading the log files, I believe I know what causes the incorrect icons to appear for songs on the wrong page. Link to thread; [Jam Emote Wheel is bugged.](https://forums.unrealengine.com/t/jam-emote-wheel-is-bugged/2709191) It constantly calls the downloaded icons expired and out of date on startup, or it attempts to unload them if the Jam Wheel is flipping through pages too quickly, because of the memory limit. As for the issues with Ghost Jam Tracks or the final page not working correctly is beyond me. ---
**Author:** ![TheGamerSide67](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thegamerside67/32/1062962_2.png) [@TheGamerSide67](https://forums.unrealengine.com/u/TheGamerSide67)\ **Post date:** [April 3, 2026, 9:34am UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/18 "2026-04-03T09:34:39Z")
The issue gets worse the longer the play session persists. It now happens much more frequently. Restarting the entire client resolves the issue temporarily. ---
**Author:** ![TheGamerSide67](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thegamerside67/32/1062962_2.png) [@TheGamerSide67](https://forums.unrealengine.com/u/TheGamerSide67)\ **Post date:** [April 18, 2026, 5:15am UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/20 "2026-04-18T05:15:16Z")
What is the status on this? It’s been nearly two weeks now. ---
**Author:** ![TheGamerSide67](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thegamerside67/32/1062962_2.png) [@TheGamerSide67](https://forums.unrealengine.com/u/TheGamerSide67)\ **Post date:** [April 20, 2026, 1:26pm UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/21 "2026-04-20T13:26:54Z")
Any status update? ---
**Author:** ![TheGamerSide67](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thegamerside67/32/1062962_2.png) [@TheGamerSide67](https://forums.unrealengine.com/u/TheGamerSide67)\ **Post date:** [May 2, 2026, 12:07pm UTC](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815/22 "2026-05-02T12:07:27Z")
This issue is still unresolved. [Next page](https://forums.unrealengine.com/t/when-performing-jam-tracks-it-may-unexpectedly-lower-the-bpm-and-raise-it-again/2706815.md?page=2)