Dishes never come out clean

You can pre-test this by rubbing some vinegar on an individual glass with a cloth. If you cannot remove the cloudiness by soaking it and rubbing vinegar on it then it is possible that the glass is etched due to harsh or cheap dishwasher detergent and vinegar will not solve the problem.
If soaking or cleaning with vinegar works then try adding some to each cycle to see if the clarity of the glasses improves.

Hard water stains are easily taken care of with the help of vinegar. Add 1/4 vinegar to the cycle when you start it and it will help to remove spots and cloudiness.
As for food residue you might check your filters and water pressure.

Dishes may not be getting enough rinse water. Had the same problem before I replaced inlet valve. My fisher packel was 3.5 years old before I replaced the inlet valve due to a knocking noise, but It still ran through cleaning cycle without any alarm codes.

Try changing the type and brand of detergent as some are better than others. Could the water softener need service? If you wash/rinse any dishes in the sink, do they have the same problem? Good luck!

The milky residue on the glasses is not a residue at all: it is irreversible damage to the glass and is caused by a myriad of microscopic cracks in the glass surface combined with surface etching. Vinegar only works if there's a limescale deposit caused by using too little salt (no salt at all, or the salt dispenser set too low, or just not adding supplementary salt in a hard water area when using dishwasher powders with an in-built salt function)

It can happen to most glassware, but will happen very quickly to lead crystal which is why every single dishwasher I've ever sold or rented out says not to put them in the dishwasher. So called "glass protection" dishwasher powders are a marketing gimmick; all they do is to try and eliminate chlorides from the mix and boost the salt content, but they won't actually stop the damage completely.

Similarly, most advise against putting silverware in the dishwasher. By silverware I specifically mean anything made of silver, plated with silver or electroplated nickel silver (EPNS). Stainless steel is fine though. You might like to read this short article on the subject.

white film is actually from the calcium and magnesium found in hard water. your dishwasher is fine. its the water leaving the residue and spots. go to www.dishwasherfilter.com . they have a new product out exactly for this reason. very affordable and works amazing. you will love it.

This problem occurs due to excessive calcium build up inside the dishwasher. Try cleaning you dishwasher using a dishwasher cleaner.

Try this cleaner(CLICK HERE)

are you using palmolive eco liquid detergent? if so - google "palmolive eco white residue" and you will find out that your detergent is the culprit. the solution is to use 1/2 cup of vinegar in your rinse cycle and soap dish and STOP USING PALMOLIVE ECO!

You do not have to take it apart to clean it. You can run it a couple of times with dishwasher tablet and it will self clean. In general I recommend rinsing the food off of the dishes and silverware before placing items into the dishwasher. Also, run the hot water in the sink until it gets hot and then turn on the dishwasher. good luck with it.

never put silver in a dishwasher..
ensure the rotating arms are not being blocked by anything