>> Keep in mind that also some 2D effects like transparency are done
>> using the 3D part of the GPU, so on machines with R300 GPU they have
>> to be calculated by the CPU and thus slowly for now.

> Not that slow on a reasonably fast machine.

You may want to read this thread then:

https://morph.zone/modules/newbb_plus/viewtopic.php?topic_id=8845&forum=9