The reason I believe this is bad is because some people start playing extremely slowly near the end of a game if they are losing in hopes that your rating will increase and they will lose fewer points once their game with you is over.
Why do the ratings adjustment values change?
I am not certain, but I think the reason the ratings change is because of other games. Example say two players are rated 1200. So possibly a win means 30 points. However since one of the players wins three other games while playing the player with the 1200 rating is rating goes to 1267. So if the player with 1200 wins against the two players starting out with 1200. Instead of receiving a new rating with 30 points now it is possibly 43 points. Everything is in constant change as wins and losses occur.

I know that is what happens on this site, but it leads to people playing "rating games" where they begin to slow play at the end of games if they are losing and hope your rating will go up before their loss becomes official. If your rating goes up then they will lose fewer points once the game is officially over.
I think the ratings adjustments for a win/loss/draw should be fixed unless someone's rating is inaccurated due to too few games played or a very lengthy winning streak, etc. What do you think about this?

the rating reflects the opponent's level of play. the more recent the rating the more accurate. if they lose a game they've already started before playing you, then their rating is merely reflecting their actual rating more accurately. therefore, yes it sucks in reference to what you are complaining about. however, it's the nature of the beast. to argue that their ratings should not be more accurate because how it affects others playing against them does not seem to make much sense in the general scheme of things.

I think that you just care too much. Start playing more games at once, you will never notice your opponents playing slowly.

the more recent the rating the more accurate.
Really? Given how much even one loss can affect your rating on this site, (forty points for ONE loss to someone 350 points lower than yourself!) it seems likely to me that NONE of us really have a very accurate rating for longer than one or two games and then we are either over or underrated again!

I think that you just care too much. Start playing more games at once, you will never notice your opponents playing slowly.
Maybe this is the solution. How many games do you need to play simulaneously in order not to notice your opponent's slow play?

Between 15 and 20 works for me.
Then either your opponents don't slow play or you don't play that often either and therefore don't notice it. I have had as many as 30 to 40 games going at once and still notice those who only move once per five days when they are losing!
People don't play slow at the end of games in hopes their ratings will go up. People play slow at the end of games usually out of dread for the game, and sometimes in the hopes their opponent will resign out of fustration.

People don't play slow at the end of games in hopes their ratings will go up. People play slow at the end of games usually out of dread for the game, and sometimes in the hopes their opponent will resign out of fustration.
What? No, I'm saying they slow-play so that if your rating goes up and they lose then they will lose fewer points. Nobody starts playing slow when they have a winning game!

How is losing 40 points for losing against someone 350 points lower then you not fair? If you can't beat someone that much lower then you then you deserve to be rated lower or the person your playing deserves to be rated higher (or a mix of the 2).
Its best for the current rating to be considered instead of the one you had when you started the game because its a double edged sowrd. You deserve to go up less against someone rated 1300 when you started to play them at 1300 and are now 1500. You deserve to lose less if you are playing the same person but droped 200 points before the game ends.
Why do the ratings adjustment values for a game change in the middle of a game? Shouldn't the value of a win loss or draw be fixed once a game starts? The only time I can see the need for the values not to be fixed is if someone has played too few games for their rating to have stabilized. Any thoughts on this?