PhD with limited research activity
Situations like yours happen, unfortunately. Development gets delayed, experiments get postponed and suddenly a supposedly nice scientific project becomes a thesis of half-baked tests and questionable results, which you can't be proud of. I'm very sorry it happened to you.
If you are sure you won't stay in academia, perhaps it's a good idea to start branching out now. In my home country it's possible to work and have a PhD position at the same time. Additionally, the experience is valued there more than a title. Based on that a possible course of action would be to start looking for a job and discuss with a prospective employer whether they are interested in you finishing the PhD programme. If so, you could perhaps arrange how much time you spend at work and at the institution so that you start to gain the experience and get the title, as well.