Experiencing framedrops on PPSSPP on S25 (base model)

Hello! Im new to emulation on android. I got my S25 few weeks ago and thought Id give a try to emulation.

However, I've installed PPSSPP and trier to play some games and I'm experiencing some framedrops.

-On Wipeout Pure and Pulse, dropping from 60 to 30 for few frames when there is a powerup Vfx.

-On Outrun 2006, dropping from 60 to 45/30 for a second or two, randomly during a race.

Im using Vulkan and rasolution is set to PSP native (1x).

I thought that it would have been pretty easy to emulate psp on this device. Am I missing something?