Apple is aware of a performance issue on 5400 / 6400 / 6360 machines with Virtual Memory (VM) active on Mac OS 7.6.1. The issue was resolved in Mac OS 8. For 5400 / 6400 / 6360 customers using Mac OS 7.6.1 with VM turned on who are not satisfied with the level of performance, the recommendation is to do one of the following:
- Do not use Virtual Memory
- Re-install Mac OS 7.6.1
- Upgrade to Mac OS 8