UE5-00 - Fire Particle assets look different when imported in an environment from unreal engine 4

Hello.
I’m new to using unreal engine so please forgive my ignorance. Currently started and using unreal engine 5

i am Building a medivial scene and i imported the medvial project from unreal engine marketplace (It was made for unreal engine 4, but im using unreal engine 5)

I noticed that after i add a P_Fire asset to the scene, it doesn’t actually look like fire, more like a small version of the sun. (Image below)

How it looks in unreal engine 5 (in a village imported from unreal engine 4)
How it looks in unreal engine 5 (in a village imported from unreal engine 4)

This is a stark contrast to how it looks when i import the exact same asset on a brand new project. (Image below)

How it looks in a brand new unreal engine 5 project
How it looks in a brand new unreal engine 5 project

What could i be missing?
Any piece of information or nudge could be a big help. I feel like its something fundamental and i just lack the experience to realise it.

Much appreciate any help. thanks