Retroarch web default core tries loading too fast for the PS5 browser probably

Is there an existing issue for this?

• This is a bug in RetroArch frontend
• I have searched the existing issues

Description

When I play a video other than youtube in the first 5 seconds of reloading, it can never find the videofile, if I do it after, the videofile is found.
I think the same issue is happening in Retroarch.
It's for all cores.
Sorry if I'm mistaken.

Expected behavior

For the Error: could not load default core, to not appear

Steps to reproduce the bug

1. Open Fortnite (UNO or PS+Premium cost money)
2. press startbutton
3. Go to gear tab
4. Supports&Refund
5. Support
6. Scroll down, click on X
7. edit profile and add https://web.libretro.com to profile, go back
8. Go there

Version/Commit

November 2025 recent web version

Bisect Results

No response

Present in the nightly version

I don't know

Platform & operating system

PS5 or PS Portal Cloud

Affected Cores

No response

Environment information

PS5 that's locked down and has 1 browser.

Relevant log output

Start by reproducing the failure at web.libretro.com on a PS5 or PS Portal Cloud browser, especially during the first five seconds after reload, and capture the default-core loading behavior. The issue provides no source files or tests; done means identifying and fixing the timing failure so the “could not load default core” error no longer appears.