Severe FPS Drops and Short Freezes in Fortnite Creative / UEFN

Summary

Hello,

I would like to report a severe performance issue that we are currently experiencing in Fortnite Creative/UEFN maps.

During gameplay, the FPS suddenly drops very aggressively. For example, the game can be running at around 160 FPS and then suddenly drop to 16–18 FPS, and in some cases I have seen it drop as low as 7–8 FPS.

When this happens, it is not just a normal FPS drop. The entire game freezes/stutters for approximately half a second. During that moment, the screen completely stops, I cannot move or react, and then the game resumes normally until the next stutter occurs.

The issue appears to become more noticeable when there are multiple players in the map. For example, I recently experienced it in a session with around 11 players. The FPS was extremely unstable, sometimes fluctuating from around 160 FPS down to 16–18 FPS.

Most importantly, this does not appear to be an issue with only my PC. Multiple other players playing in the same map have told me that they are experiencing the same severe FPS drops and freezing/stuttering as well.

This seems very similar to the issue reported under FORT-1154614, which is currently marked as Needs Triage and describes stuttering/freezing problems that become more noticeable with multiple players.

I am creating this additional report because the issue appears to be affecting multiple players and Creative/UEFN sessions, and I hope this information can help with the investigation.

Please select what you are reporting on:

Creative

What Type of Bug are you experiencing?

Other

Steps to Reproduce

Join a published Fortnite Creative/UEFN map with multiple players.
Play normally for a while. The issue seems to become more noticeable as more players are active in the session.
During gameplay, sudden severe FPS drops and stutters begin occurring.
FPS can suddenly drop from around 160 FPS to 16–18 FPS, and sometimes as low as 7–8 FPS.
When the FPS drop occurs, the entire game freezes for approximately half a second. During the freeze, the screen, movement, and player input completely stop.
The game then resumes, but the same issue continues to occur repeatedly throughout the session.
Multiple players in the same session have reported experiencing the same issue.

Expected Result

The game should maintain reasonably stable FPS during Creative/UEFN gameplay. Having multiple players in a session should not cause severe FPS drops or complete short freezes that interrupt movement and player input.

Observed Result

FPS becomes extremely unstable and suddenly drops from around 160 FPS to 16–18 FPS, sometimes reaching 7–8 FPS. At the same time, the entire game freezes/stutters for approximately half a second, preventing any movement or input until the game resumes.

Platform(s)

PC / Windows PS5

Island Code

1345-5145-1363