I played a lot of DFO and they use XIGNcode and honestly couldn't really tell the issues. I have cheat engine and ahk installed(not running obviously) and it never gave me issues about these, couldn't really tell if there was any slowdown cause not much else to compare to, I guess bdo players might see differences, but then again people get performance changes with no reason from patch to patch(same for crashing).
On the raffle event I think the main "issue" with it is how it's presented. The fact you decide what to roll for and you can clearly see other people winning when you aren't(even if they removed the popups you can just see the numbers go down on the screen) makes it so you feel bad about losing, when really it's no different than when they give you random boxes from Finto farm or for using simple alchemy on random drops or whatever, then opening the boxes at the end of the event and getting fuck all. Basically you have the guaranteed shit from the NPC exchange, and anything else should be considered really lucky draw like when you pull a garmoth out of a random event box, but because of how it's done it feels like you're losing more.
I haven't won anything yet so it's not like I've been lucky but I kinda expected to win nothing in the first place so not too annoyed at it, and the guaranteed rewards weren't bad(5 feathers, 200 ferns, 1 maid, Jhammer and a 100 stack, it's overall quite good rewards for an event).
I got all my nouver scales last week but have yet to craft the heart. It is quite a bit of silver sink, I got all the random materials but there's like 4.5b of raw silver to drop on it so I was kinda waiting to see if I'd get a free heart from the event, which didn't happen, but now I'm also wondering if the ~6b is worth 1 crystal slot at my current gear(doesn't feel like it at least). I still need distos and that takes a while as I don't farm that much, plus they're rising in price so that's not helping, hopefully they run some disto event soon(dark rift event or something like that) so I can save a few billions.