[*] Poor performance (DX9, looks and performs horribly!).
[*] General clunky performance and combat in all aspects.
[*] Horrible translations (google translated, everything from quests to talent tree).
[*] Bad customization in UI and keybindings.
[*] Old bugs and exploits comes unfixed from olders versions.
[*] No real endgame content. (a few endgame dungeons with copy-paste mechanics).
[*] No real PvP (no BG, No Arenas, No matchmaking, No rewards).
[*] More than 6-year old and early access (all the time in the world, and stil 0 f* given)
[*] Failed for obvious reasons, already in two markets.
[*] Cashshop (so when the hype train moves to another game, they can implent Pay2Win whenever their investors feel like).
No matter how much you they try optmize this game, it simply won't run good since it's DirectX9 based, and because it's also ONLY Directx9, the graphics will stil look like it is from 2002.
I advice you to wait or try it once it goes FreeToPlay, but I DO NOT recommend spending real money at this point.