Long distance isochrones

Hi Amandus, any udpates which would let us do an isochrone beyond 60 minutes ?
If not, how to proceed to make it works beyond 60 minutes ? Is it really time-consuming? Could a beginner like me make it works ? By beginner, i mean i rarely do code or similar things except sql on Qgis and yet ^^.
I just need to calculate an isochrone between 60 and 120 minutes

I just forgot to say this plugin is fabulous !
Thanks for your answer.