By checking the config template, and if "SAC_DLC" doesn't appear in it, just skip the DLC searching process. (less easy for users to find, but easier to implement)
If too many DLCs (over 15 for example), propose to skip the checking of DLC, and set a field in EmuConfigTemplate.ini to a value. Problem is some Emus use 1 to unlock all, some 0 (like ALI213), some true, some false (CreamAPI)
Multiple ways it could be done: