@sushimcpe You can use the registry editor to change the repeat delay to a value that is too large to realistically reach.
I found this registry path online HKEY_CURRENT_USERControl PanelAccessibilityKeyboard Response.
On linux or bsd with kde plasma, you can disable repeating keys in the system settings.
it sounds like something is shorting the key temporarily. cleaning it might fix it.
you'd have to take it apart to properly clean it though