[Protootr]

Assuming your hardware is in good shape, the number one reason for PT crashes is plugins that are not up to date or that are badly programmed.

I used to have an enormous amount of plugins installed even though for day-to-day work I only use a particular set of go to plugins.

About 5 years ago I thoroughly managed my plugin collection. Removed freebies and all others that I do not use.

I didn't have that much crashes to begin with but now I can count the number of crashes per year on one, maybe two hands. And most of the times these are with very demanding sessions. Besides it is also a lot less time consuming to keep the plugins I do use up to date.

I still check out demos and freebies, but I make a habit of not installing them during a project and immediately delete them if I am not 100% sure I will use them.

Next to that I don't install any exotic software or utilities beside the ones installed by plugins and DAWs. And if you can afford it, especially if you earn a living with using Pro Tools, use a different computer for browsing, email, administration, gaming, etc. Keep your Pro Tools workstation as clean as possible from any other software.

These habits make a world of difference in my experience.