I did not yet upgrade to the latest version, but to migrate to compose I only had to copy the volume paths and the environment variables from Synology.
I can share my compose yaml by the end of the day if you need.

Before I upgrade I will try putting the cache on a SSD instead, seems it can improve performance quite a bit

The latest version of Synology with the container manager allows you to update images from the registry and will restart the container for you.
But I still migrated to docker compose to enable hw transcoding with quicksync

Use colima ;)

They could even have a second USB C port and have display output on that plus a full size hdmi instead of the two shitty micro HDMI ports