Thats why you need to calculate which "eventual resolutions" divides down to values without fractions after your scaling has been applied.
So if you take a 2560x1440 panel, 160%/1.6 scaling factor will give you 1600x900, hence there won't be any artifacts. Between 100% and 200% there are maybe 5 combinations that will give you clean resolutions.
As an example:
Enter monitor Width (1920):
Enter monitor Height (1080):
1920x1080 at 100%
1600x900 at 120%
1536x864 at 125%
1280x720 at 150%
1200x675 at 160%
960x540 at 200%
800x450 at 240%
768x432 at 250%
640x360 at 300%
Aything besides these value WILL give you artifacts at some level.
So if you take a 2560x1440 panel, 160%/1.6 scaling factor will give you 1600x900, hence there won't be any artifacts. Between 100% and 200% there are maybe 5 combinations that will give you clean resolutions.
As an example:
Enter monitor Width (1920):
Enter monitor Height (1080):
1920x1080 at 100%
1600x900 at 120%
1536x864 at 125%
1280x720 at 150%
1200x675 at 160%
960x540 at 200%
800x450 at 240%
768x432 at 250%
640x360 at 300%
Aything besides these value WILL give you artifacts at some level.