By default Bmax uses a DX driver. That command sets an OPenGL driver.
DX seems to be slower initialising. A few people have commented that DX driver implementation in Bmax is poor as if it was an afterthought while OpenGl was selected for X-platform.
In addition, when comparing B+ with Bmax, be aware that Bmax is 2D in 3D using DX7 Direct3D while B+ is DX1 using DirectDraw.
DX seems to be slower initialising. A few people have commented that DX driver implementation in Bmax is poor as if it was an afterthought while OpenGl was selected for X-platform.
In addition, when comparing B+ with Bmax, be aware that Bmax is 2D in 3D using DX7 Direct3D while B+ is DX1 using DirectDraw.