Index corruption detected. Please retry the refactoring - indexes will be rebuilt automatically?

Anyone knows why it keeps refreshing and slowing down, and indexing very frequently?

I would first look into the extent of the corruption. Do not try recreating indexes without fully understanding how far the corruption goes,in any case i would call a mongodb expert

Here is more https://www.quora.com/What-is-the-proper-way-to-handle-MongoDB-file-corruption