Agenda slowness is killing me. I need a solution, but honestly I feel like my next band-aid is probably an upgraded computer. I create a new org file for each

Agenda slowness is killing me. I need a solution, but honestly I feel like my next band-aid is probably an upgraded computer. I create a new org file for each client, plus a few extras, and so at this point I have (ls -al | grep org$ | wc -l) 86 such files. I could speed it up by doing more archiving, but it's useful to have history for long-running engagements in the main file vs the _archive files. I may decide to move moribund/closed engagement files to a subfolder for cold-storage, but then there's the out-of-sight, out-of-mind problem. OTOH, I never ever print from Org, and I use Exchange for calendaring, so the other two points aren't a problem for me, at least.