I am not an architect, I am a Software Engineer.  I had to help someone work out why their chief architect (Version X9) was getting slower and slower the more they used it.  They were convinced it was the speed of their PC.  They have an 8 core AMD Phenom and 2 x 128GB SSD's a 500GB HDD and 16GB ram, the processor is a bit old but certainly not slow.   I have read a number of reports on here about similar problems, none of them with real solutions.   This is what happens.