Step 1: Okey first get up task manager windows - hold ctrl, alt, delete.
Step 2: Now go ingame and bring up task manager again, you should see under
applications theres 'flyff' Now right click it and 'Go to process'
Step 3: This brings you to processes and should have flyff there, right click 'flyff'
than 'set priority' and click 'high'
Than it says using this may curse unstablty, meaning it will slow other stuff on computer
while flyff is on. Press ok and enjoy no more lag
Make a comment, about it work or not x) for me it do. But i dont know with you guys.