Podle googlu je to nějaká vyjebávjka mezi hrou a amd procesorem. Skus upravit tu ikonu spouštěcí ikonu o parametr -cpuspeed=2300

Use latest drivers from AMD's site and add -cpuspeed=xxxx to the end of your shortcut to l2.exe, where xxxx is your process speed.

So on my A64X2 3800+, it would be "C:\Program Files\Lineage II\system\l2.exe" -cpuspeed=2000