So I know my MMR is all caught up with my CSR because my CSR had just went up the game prior to this ONE, so why is it that I didn't go up after? I mean, I beat Two Diamonds with a Gold on my team...
There's really something wrong with this Doubles playlist system.
The game prior you lost which means your CSR couldn't have gone up. Also remember that CSR changes are delayed a game. Since you lost the previous game while maybe underperforming or you just were expected to win the game would set your CSR change as negative 15 for the next game. Basically if you lost that game on tyrant you would have lost 15 CSR. However you won and since you can't lose CSR over a win the system chooses the other outcome and only gives you 1 CSR.
Now I know that it might be hard to accept you underperformed or lost when you weren't supposed to in the previous game as you went 16 and 11, but for both of these games you were the highest rank and had a lower rank on your team which means you are expected to put up decent numbers.
Edit: also going up doesn't mean you are caught up in CSR to MMR. The only easy way to tell if it that you often go up and down 15 and flucuate within a couple of tiers.