Yea, I don't know if it is a CPU Power issue, or a CPU Availability issue on FM9? With this beta and FM9 turbo, I could see my patches having 35% CPU availably (before hitting 80%), so was just wishing if its a CPU Availability issue, not a processing power/clock speed issue.
I don't think it is as much a memory issue, as the Mk I does have some FullRes IR's loaded over the old legacy IR area (prob need to update the Wiki)... and I still have 1000 user IR slots vacant anyway on FM9... seems that's a design decision, rather than a hardware limitation.
Concerning using them Live, I offer the same old 'use your ears' comment - I have used IEM for years, and never had a better sound with my FX3 Mk1 than I did using FullRes, in FOH and in my ears. And both experiences matter to me. If I sound better to me, I play better, I enjoy it more, etc...
I also love the sound I am getting with the FM9 with this beta ... and I will always be looking for better.