Not sure I can help you here, but when I bake loaf type of bread, like a semolina loaf, I bake at 350 for 40 minutes.
Just for an example here is a link to KAF recipe for white sandwich bread. They have a pretty good selection of recipes and also the blog is very useful.
https://www.kingarthurflour.com/recipes/king-arthurs-classic-white-sandwich-bread-recipe
Hope you find the solution and good luck!
Vanessa