You are not the first to have that issue on the Bank AOG. Annoying I bet. I don't know what your graphics card supports or your RAM capacity is but some graphics cards come with ATI control which can be turned off(unchecked) via your control panel and programmes. Can I ask? Does it happen intermittently or is it always the same? I seem to remember someone having the problem when the Bank was busy(like this morning) but not having the keyboard lag when the Bank was quiet.