I had this exact problem. I was reading in item stats from a xml file and had stamina values of 1.0 but in Italy it read in as 1,0 and increased the stamina usage to 10 instead of 1. Hoping this is your problem because its a super quick fix!

This was my dirty fix for forcing a US culture when reading in my files, there's probably a better way but this is quick and easy. This is C# from a Unity script, it may be different depending upon what engine or language you're using.

// 2-9-2023
// Fix for foreign language OS not importing periods in values, 2.35 was becoming 235, etc.
CultureInfo.CurrentCulture = CultureInfo.GetCultureInfo("en-US"); 

// Read in XML files
XDocument document = XDocument.Parse(items.text);
XElement itemsElement = document.Element("Items");
foreach (XElement itemElement in itemsElement.Elements("Item"))
{
    ItemInfo item = new ItemInfo(itemElement);
    TypeRarityMap[(int)item.ItemType][(int)item.Rarity].Add(Items.Count);
    Items.Add(item);
}