PS3 Emulation Performance?

Hi guys, I just recently started out with getting into Emulation on the Steam Deck and used stuff like Retrodeck to play PS2 games but I noticed some of them would be lagging or stuttering during gameplay. Is that because the Steam Decks hardware is just too underpowered? Would trying PS3 games just be a complete lagfest? Theres some upscaled ports I wanted to try