The in-game timer runs in HH:MM:SS:FF. The following is a list of results for each frame you save on. The goal is to encounter and successfully YOLO ball a Lv. 4 Nidoran with DVs of FFEF (13 HP, 15 Attack, 15 Defense, 14 Speed, 15 Special) using this path: 
https://www.youtube.com/watch?v=qPzSWHyMuW8&

SUCCESSES: 54/60 (90.0%)

0		Success
1		Success
2		Success
3		Success
4		Success
5		Success
6		Success
7		Success
8		Success
9		Success
10		Success
11		Success
12		Success
13		Success
14		Success
15		Success
16		Failure (YOLO ball)
17		Failure (YOLO ball)
18		Success
19		Success
20		Success
21		Success
22		Failure (DVs 00F0)	
23		Success
24		Failure (DVs FEEE)
25		Success
26		Success
27		Success
28		Success
29		Success
30		Success
31		Success
32		Success
33		Success
34		Success
35		Success
36		Failure (L3 Nido-M late)
37		Failure (L3 Rattata early)
38		Success
39		Success
40		Success
41		Success
42		Success
43		Success
44		Success
45		Success
46		Success
47		Success
48		Success
49		Success
50		Success
51		Success
52		Success
53		Success
54		Success
55		Success
56		Success
57		Success
58		Success
59		Success

NOTE: These tests were done on a variety of seconds. The second you save on might matter, but it would only increase/decrease the success rate by 1-2 frames.