Using just:
jei-1.20.2-forge-16.0.0.28.jar
map_atlases-1.20-5.12.5-all.jar
ImmediatelyFast-1.2.7+1.20.2.jar

The minimap renderer shows no map data, just a blank map. Removing ImmediatelyFast or reverting to Map Atlases 5.12.3 returns the minimap to normal.

Personally, I noticed no major issues using ImmediatelyFast with Map Atlases 5.12.3, so reverting to the older version works great. (Would like that marker disappearing bugfix though 😝) I also noticed no improvement on 5.12.5 - the lines between maps still sometimes showed up exactly as they did in 5.12.3, but they never showed up often to begin with.

I'll also add that I'm super thankful for all of your mods dude. You are a legend!

ill disable integration for now until i figure it out. i tried using IF batched rendring but aparently it didnt go well