TimescaleDB provides such community features as compression, which allows to save space a lot, and continuous aggregates, which gives performance and save space if used together with retentions.
Tried VictoriaMetrics?
The author compares with other storage engines comprehensively from time to time.
You mean storage efficiency? Seems that unless the aggregation is happening before being stored, it would be unfair to compare influxdb with other databases that are tasked with storing per-record granularity.