DCS is preloading All modules when starting up. Before it loaded when selected in game.
To fix it navigate to \DCS World\Config folder and open main_autoexec.cfg. At line 28 comment it out "--bkg_load_all_plugins = true", or set false.
Then it loads as normal
Or just add "bkg_load_all_plugins = false" to you normal autoexec.cfg in savedgames\dcs\config