Hello @Wacky2bakky ,
Thank you for your feedback. If you haven’t already, Please update Samsung members app to latest version from galaxy store and send us an error report immediately after experiencing the issue from the Samsung member’s app -> Beta Feedback -> Error Reports to help us debug the issue. We apologize for the inconvenience and appreciate your contribution to the beta program.
It may also be worth reaching out to Fortnite for support as it is combination of texture game is using and what textures are available on the device.
One UI Beta Team