I have two problems:
1) Your FC is 'way too low given your CYA levels. You need to have your FC ALWAYS between 5 and 10ppm, and you need to shock it 20ppm, regardless of your CC. You MUST raise your FC
2) Your CH is EXTREMELY high. 400ppm is as high as it should go, and, with a tile, concrete or similar pool, should be above 200. With a vinyl pool CH can go as low as 0. You are likely to get milky water and possible scaling.