VFX: Incremental search during lookup won't work

Cause:
Table used in lookup is using Buffering Mode=5

Solution:
Use BufferModeOverride=3 instead

Source:
dFPUG Forum msgid=730145

Alternative solution(s) based on personal experience:
1. Use BufferModeOverride=1
2. If Buffering=5 is inevitable, use a view as lookup source