Question about MikroTik CRS309-1G-8S+INL

Rather not, at least not with much pleasure under RouterOS 6. Routing is then handled in the small CPU and not via the switch chip.

It is a solid L2 switch, those who buy it for this should be satisfied. Otherwise, the review by ServetheHome (https://www.servethehome.com/mikrotik-c...) is recommended.

This could change with RouterOS 7, it looks like L3 offloading will be retrofitted, then the switch chip could also take over L3 routing. But as of early 2021, v7 is still in an early beta phase.