RetroAchievments not working with gpSP core

[AhmadSTi]

Knulli build version

scarab 2026/05/11

Your architecture

TrimUI Brick

Issue description

the other cores (mGBA and VBA-m) are working but their FF speed (in Pokemon FireRed) tanks with RA active but once i change the core to gpSP i can see inside RetroArch that RA is disabled

Detailed reproduction steps

i just change the default core for GameBoy Advance to gpSP
using Pokemon FireRed US Rev 1 not modded and the RetroAchievments is working with the other two core but theit FF Speed is not as fast as gpSP

Details of any attempts to fix this yourself

i tried to manualy activate RA within Retroarch with no result

Details of any modifications you have made to Knulli.

no modification

Logs and data

No response

[Crayphish]

This is not a problem with Knulli, Retroachievements have determined gpSP is not suitable for RA use, see: https://docs.retroachievements.org/developer-docs/unsupported-emulators-and-cores.html#game-boy-advance
You can't use gpSP for Retroachievements anymore.