Just recently I have started droping a lot of frames..bout 10 to 20 percent. The only change I made was to move motion estimation to 90%. The picture is much better but now I can't capture worth crap

celrom 533
128mb ram
TV Wonder PCI card.

Any advice on getting a good vcd caputure off tv without a high motion capture...or what level of motion capture should I shoot for..thanks!