@Magaki Is there a way to put a lighter gba emulator so that it can run well? Thank you

@Magaki I see, I thought it was powerful enough. Thank you!

Hello, how are you, I have the following problem. All gba games work slow for me, they are only from that emulator, all the others work fine for me.
I have recalbox 1.9 with a Raspberry Pi Zero W
SPECIFICATIONS
-CPU: Broadcom BCM2835 ARMv6 1GHz
-GPU: Broadcom VideoCore IV 250 MHz
-RAM memory: 512MB
-External Storage: MicroSD (not included)
-USB: 1x Micro USB (OTG) for data and 1x Micro USB for power
-CSI connector for cameras*
-Connectivity: WiFi b/g/n, BT 4.1BLE
-Power: 5V via MicroUSB (power supply not included)
-Chipset: BCM43438 (WiFi/BT)
-Size: 65mm x 30mm x 5mm. It is installed on a Retroflag GPI CASE

What could it be? If anyone can help me I would greatly appreciate it!