Its hard understand which game you play, and about which game stats and mechanic you talking. Its about WOW or which game?
1. In Lineage 2 not exist nothing about elemental 240. Its 222 and its 25%
2. P.atack boost all the time will give less boost - because of game mechanic. P.atack stat is maked from 2 seperated stats - normal p.atack (class tipe, class type bonus, str, multiplicator and etc) and additional p.atack (some skills, items and etc). All buff effecting just normal p.atak. In the end items, skills (in practice its no difference DB items/skills understand the same) with p.atak boost, buffs - will boost 60-70% of all this p.atack. Resume - 1% p.atack will give all the time less boost.
3. I have clan 8years - or more, helping for new people, enchanting this people items - and i newer not see that someone have right attribute attack. Newer not see. Im talking about 105-116 lvl people.
4. You cannot make any test in right way, and cannot get right results! For test need admin rights, test server and off random dmg stat!
5. A lot test are maked with admins rights in other lineage 2 servers - and its nothing about what you try to say here Your imagination its just wrong.
6. I know this group in discord - there no people who talking right things. Most its "jokers". Some maybe "ok".
7. Some years ago I just create 1lvl acc and lvl 1 by 1 lvl - and write all stats changes in exel, buff stats, items and and etc. Its a lot job. In the end I get big excel with dmg calculation. And its show that you are wrong. P.s.: this info i newer not share - because most people in L2 its just RMT traders - the not play l2 for fun.
Im not want insult you. I just not like people who doing and talking about what they not understand.