@Idris Hi again! I think, I`ve found a solution!
I tried different ways to stop laggs: cleaning my computer; high priority setting to RO; adding to exceptions RO.exe, rusro.exe, RO folder; compatibility mode (with Win 7-XP) etc. and nothing helps. But! When I totally turn my antivirus off (I have Kaspersky) and run RO the client started faster and all laggs in game are completely gone!
In the same topic here I read that turning off the Avast! gave the same result.
So, just try to turn your antivirus off )
Проблемы со входом в игру