My Victron controller pulls full wattage from panels until my batteries are fully charged. On the battery preset tab, see if there is a preset for AGM batteries and try that instead of using user defined.
Edit: Try draining battery down and check to see how it works. Charger is showing it is in Float mode in first pic, just keeping battery topped off, When battery is low the state will show bulk like this picture and pull full watts from panels. I see you went with the 2 x200 and the victron, good choice.