Hello,people of Houdini !

Recently i've started learning houdini and i've got very weird problem with performance of houdini.
i've downloaded a simple scene with a torch pyro solver, but when I was trying to admire its beauty in vievport i've got a very low fps ( 4 fps +/- ) My PC spec : i5 9600k, rtx 2070, 16 gb ram ddr4, do you know what can be the issue ?

Cheers,
Adam