XP gain changes with level, not CP. A level 50 CP 3600 character earns the same XP as a level 50 CP 10 character. A level 10 character earns much less XP than a level 50 character, even if those characters have access to the same amount of CP.
Alchemy, enchanting, and provisioning writs used to give lower XP than durable master writs, but now they all give the same.
At level 50, with no bonuses, master writs of any type should award 7485 * 2.25 = 16,841 xp. (The 7485 is the base quest reward xp at Level 50, and 2.25 is the multiplier for a “very hard” quest.) With +100% XP from the event, you would get your 33k. What you’re seeing there is the event bonus working as expected.
To get 55k you have added some major bonus, as that is about 3.25x the base value, or about +125% more xp on top of the +100% event bonus. Partial enlightenment would account for that, if it ran out on that 55k writ. (Enlightenment multiplies your total xp gain by 4x. It is not an additive bonus. But when it runs out, it applies to only part of the total xp gained for that action.)
Listing out your other sources of xp bonuses would help determine what’s going on with more confidence.
https://www.youtube.com/watch?v=0G6th7JH3h0 

karthrag_inak wrote: »Curse khajiit's massive monitoryou can kind of see it but it is blurry at max resolution.
Here's some screenshots to help as well :
Here's first turn in @ cp317
and here's last turn in @ cp352
The screenshots don't show anything.
ALSO, is this entire thread about the xp reward per writ (which your video completely fails to show btw, as you turned in multiple writs before checking the cp gain)
OR is OP complaining about the xp requirement PER CP? If it's the latter, <blah blah blah>
I am at 3555, and it costs 1.280 mil per cp. So if this is what OP is actually complaining about, I have to question why, as basically every RPG in existence does this.