QUOTE(ALeUNe @ Nov 1 2010, 09:09 AM)
Yes, ATI does not support opengl by default.
It requires separate driver.
http://support.amd.com/us/kbarticles/Pages...iew-driver.aspxIt is not the old directX problem.
This is because changing to from "switchable" to "discrete" would solve the laggy problem. The driver works fine.
It is generally the driver problem for the "switchable" and "optimus".
I dun get what u meant...
Optimus works fine for all other game with latest directx. Only Warcraft 3 with older directX not working.
Also, by using openGL, switchable/optimus driver works fine... proof that no problem with Optimus/switchable.
Only problem is with DirectX driver.
If you search around the internet, even nVidia newer graphic card have mouse lag.. so definitely not Optimus
issue. But a generally compatibality of DirectX 8 vs nVidia driver.