How long to stay in unproductive environment?

Looking for some career advice as to whether it’s best to stick it out or look for a different opportunity.

I have four years of experience working as a data scientist and several years as a data analyst. I have worked at three different companies (large [10000+] and small [<1000]) and I left my last job because I did not find the industry exciting, but the company overall had a strong data science department. The company also did not pay …

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