As a freelance dev one of my clients is the official distributor (seller) of one of the german giants in another country. They force us to use their erp. Just q

As a freelance dev one of my clients is the official distributor (seller) of one of the german giants in another country. They force us to use their erp. Just querying a 1M row table took more than 5 minutes. I inspected the DB and what did I find? Tables in german and english. No indexes for PKs. A lot of PKs that were pure strings... We suffer from bad data, strange bugs and awful performance. Really surprising of a sw coming from Germany