If the subtitles are slightly off (too early or too late), you can fix them using media player settings:
YTS releases are known for small file sizes but often do not include subtitle files (embedded subtitles) in the MKV container. You will likely need an external .srt file. 2. How to Obtain Subtitles
Search for "Critters 2" and filter by "720p" or "BluRay". Subscene.com: Look for rips matched with YTS/YIFY. 3. Recommended Subtitle Formats