Most gif FPS settings do not work

[wrightwriter]

ffmpeg 4.2.2
I tried a lot of settings, but only 60 and 30 fps work for me.
The others get stuck on "Exporting PNG images" and never reach "Generating GIF".
The images themselves do get generated in the folder.

[wrightwriter]

Also, a lot of time settings cause the same problem. Usually ones with 2 numbers after the decimal.
ex. "1.4" is ok, "1.45" is not