Steps to reproduce:
1) Open affected project
2) While in project view
	i) Right-click a test and choose option to edit its test properties
	ii) Make edit to its properties, for example change the value of CustomProperty2 from its initial value to any other.
3) Repeat step 2 for each test in this project

Expected result:
Changes to test properties can be made to all tests in project

Actual result:
After a varied number of changes (eg. 3-6), Test Studio begins to slow down and eventually hangs.