Well I didn't test for memory usage, because the whole point of my reply, was that there was a significant difference in display speed when the two different versions were tested under the exact same conditions. Khaled himself stated earlier in this thread that he had made a change in 6.31 that "clearly had an effect on display speed" so why are we still going on and on about this?

~ Edit ~
Originally Posted By: Khaled

I changed the bitmap loading method in mIRC 6.31 so that it no longer used video card memory (or at least, tried to avoid it). This resolved the background picture issue. However, it has clearly had an effect on display speed.