I would recommend attempting dynamic EF, as it is mutable and can be adjusted as needed
If you can schedule downtime during low traffic (since you currently have a single-node setup), upgrading to the latest version of Weaviate would be beneficial. I strongly recommend scaling moving to a multi-node configuration with at least three nodes. This would provide significant performance improvements and resilience minimizing downtime as well - 3 nodes serve will be much performant than one node also traffic will be disturbed without pressure on one node.
If you can plan for this, it could make a big difference!
Regards,
Mohamed Shahin
Weaviate Support