The Affordable Care Act saw a record number of sign ups this year, but some people are having trouble finding doctors in their health plan networks. Getty Images hide caption toggle caption Getty Images The Affordable Care Act saw a record number of sign ups this year, but some people are having trouble finding doctors in their health plan networks. Getty Images The Affordable Care Act may be struggling with its own success. Record enrollment over the last two years brought more consumers into the health insurance market. At the same time, many insurers began offering smaller networks of doctors and hospitals, partly to be price competitive. That combination left…