Powered Piston and Soul Sand Bubble Columns Significantly Reduces FPS

When you have powered pistons (facing east) touching 2 or more soul sand bubble columns will tank the fps. More noticeable with higher columns, eg 1-10 fps with 6 high columns. 

Seems to be directional as testing powered pistons facing other directions the issue did not exist. Bubble columns from magma blocks did not exhibit issue no matter the direction of pistons.