I completed some testing here this evening. I took my current desktop Dell GX27 P4-3.0 GHz and added 2GB of new ram into it. Rebooted and started RB 1.5 The performance was slightly better. I still noticed a lag on the menu's but not as bad. When I switch between, let's say, my browser , back to RB the refresh on the screen is quite slow.
My second test was with my laptop; Dell D630 Core 2 Duo 2.66GHz, Vista Ultimate with 2GB of RAM and a 128mb Nvidia card, RB 1.5. In general the performance was far superior . Screen and menu lags were not present
So I think it is obvious RB is harder on older P4's and may be a little problematic. I'll most likely be moving to a faster desktop within the next two weeks.
One thing I want to know id why the colors I set do not remain after i restart the program even though I save the map? Also, my time is still off by and hour. This was on both systems.
Paul