That is working ok here as well, even at the 3717 pix width, so not that. Still wondering why you put all the text in as HansHand Italic 24 pix then change the Font and size (124) just seems a lot of work to me, but up to you
If you do not require the font(s) to be used by other applications the best place for the ttf file is your Gimp profile
C:\Users\"yourname"\AppData\Roaming\GIMP\2.10\fonts
Going back a post or two, uninstalling / reinstalling Gimp rarely does anything as all the settings are held in the Gimp profile which is not uninstalled.
If you do not require the font(s) to be used by other applications the best place for the ttf file is your Gimp profile
C:\Users\"yourname"\AppData\Roaming\GIMP\2.10\fonts
Going back a post or two, uninstalling / reinstalling Gimp rarely does anything as all the settings are held in the Gimp profile which is not uninstalled.