The two large doors (medieval door and carriage door) cause my FPS drop to 4 (four frames per second) when it is raining and the door itself is within rain splashes/sound radius from player.
Switching sounds off has no effect. Switching rain splashes off (Optifine) fixes the issue (while also removing splashes and rain sound).
Would really like to have both the rain (with splashes and sounds) and those otherwise lovely doors.