Waves TDM plugins (like the SSL 4000 Collection) run at near-zero latency on TDM chips. The Sony Oxford Inflator (original RTAS version) behaves differently—and some argue better—than the current AAX version. If you rely on these for a signature sound, 10.3.7 is your only modern-ish host.
Pro Tools 10.3.7 was a significant maintenance update released by Avid in August 2013. It is primarily known for enabling and addressing critical stability issues with modern hardware. Key Updates and Fixes pro tools 10.3.7