Since the 0.5.0 it runs fine, except few places: up in Gugrontid city, middle of Ojaroad 1 and few others I get heavy lag. I sat distance to max and min, no diference in lagging places and normal places.
Then today I noticed it lagging also in half of Ojaveda. And I discovered it was caused by burning campfire, someone had left on ground. As soon, as I took it in my inventory, lag stopped. When I sat it down again, lag reappeared. And the lag is like few (3to5) frames per second, keypress reaction is after few seconds. And because of this lag, I cannot turn precise, keypress has to be long enough to make a turn some 30 degrees at least.
My system is Debian Squeeze (testing), kernel 2.6.30, 2GB RAM, AMD 2.9 GHz double core processor, AMD HD3200 built in graphics card with proprietary driver.