Fractional scaling

Hi.
I recently installed Ubuntu Unity on my laptop. A Lenovo S340 with a Ryzen 3500u CPU/GPU.
Everything is working fine except for the fractional scaling. When i set it to 1,25 it scales correctly, but everytime i restart the laptop i’m back to the default 1,0 scaling and have to set it again to get the right scaling. What can i do to make the scaling persistent?