TimescaleDB alternatives? Performance issues with high-cardinality time-series data.

We're using TimescaleDB for our time-series data, but we're hitting performance bottlenecks with high-cardinality datasets. Queries are getting slower, and scaling has become a challenge. We need a time-series database that can handle massive volumes of high-cardinality data with consistent low-latency queries, and ideally offers better compression and retention policies. What are some TimescaleDB alternatives that excel with high-cardinality time-series data?