Poor performance GTX 1050


I work on Ubuntu 20.04.1 LTS and i have a GTX 1050 and use the nvidia driver 455.38
I changed my screen to 4K and I noticed that i have poor graphic performances when I select 4k resolution with scale 125%.
So I try with the nvidia drivers 390 and 450 and i have the same result.
I also noticed that with scale 100% and resolution = 4k , the performance will be good.
Is that normal ??

Thank you for your help.
Best regards,

Fractional scling is an Ubuntu specific feature, they’re working on it. I guess you’d better open a bug report with them