tauRec: reduce the number of events to 200 in diff-root
For now, q431 ART test sometimes failed. Actually, it is due to the diff-root consumes too much memory. Reduce the number of events to 200 in diff-root to fix this issue.
For now, q431 ART test sometimes failed. Actually, it is due to the diff-root consumes too much memory. Reduce the number of events to 200 in diff-root to fix this issue.