Makis higher better? i got 1821.
It does seem really hard to change. Looking back and forth through the 40 results that show on mine, it doesn't vary more than +- 10.
Potential reasons for this in Glicko:
* You have a very high confidence rating (very low Rating Deviation) in the skill formula so the game thinks you're where you belong.
* Your opponents have a low confidence rating (very high Rating Deviation) in the skill formula, so the game considers the game relatively low usefulness to consider for how good you are since it has no accurate idea how good your opponents are.
* If you're in a party your adjustments will be smaller unless you are facing equally skilled/better parties as your team will consistently be favored to win.