Physical location can have an enormous impact. While you can't run away from yourself and your past, it can afford a measure of safety and emotional distance.

For me, moving back home was a double-edged sword. It brought the ptsd on full force. I lived in flashbacks 24/7. It also allowed me access to stuff I had forgotten. While it sucked, it gave me the opportunity to work on the buried stuff and start to heal from it.

Moving away again helped lessen the flashbacks' intensity and frequency. While I still struggle with the past, it's now easier to remember as the past. Flashbacks come frequently, but they are not constantly present. They are also abit easier to ground from...

If you can reasonably make it happen, it might bring some measure of relief. Things to consider however: it's costly; it's a Hassel; it might take a huge move to really lessen symptoms and that's not always easy...

Personally, I think it was one of the best things for me, but I did move 1500 miles away.