We are using NT TSE as well. The SYS(3050) really helped us dramatically improve the SQL calls. However, based on VFP help file, SYS(3050) is usefull if there is a large amount of physical RAM (1 GB+). This will actually limit VFP's usage of memory to the setting set by SYS(3050,1,nnnnn). Try setting it to 10MB/8MB.

Using SYS(1104), not sure if this is VFP 7+ only, at certain key parts of the app like before or after running a long process.

Lastly, if possible, put the EXE and Data on the same drive.

HTH.