Bismuth issue

When I click in Bismuth ore in map, its frozen my screen and i cant move anymore, now when i found it i need clear map before, but i cant use farms using bismuth extra mods in mobs, please fix!!

ps.: if when i relog i try enter in map, no matter where my portal was, its impossible to move, because bismuth 'effects' in all map, the ground and the 'air'.

pps.: in 3.25 its decrease a lot my fps (less fps, not reduced, really LESS), anyway was still possible to moving around and finish the map.
in 3.26 its still worst now!