title: Xcode 13.1 + MacOS Monterey (12.0.1) + M1 Chip (8gb) + build time + system hang
body: <p>After updating latest OS 12.0.1 and xcode 13.1, project is taking too much time to build and system also hang continuously. Not able to work with this performance.
  That's really frustrating that if you using latest system and its giving that kind of performance.</p>
  <p>Even single line of code change taking 20 min to build &amp; run project.</p>
  <p>Till now i was working on Xcode 12 with same system and it was working very smoothly.
  Bz was facing same thing in Xcode 13 also.
  I thought after update Xcode, will not face those performance issue but now full system getting hang continuously while working with Xcode 13.1</p>
  <p><strong>Now the biggest problem is that not able to used old Xcode in new OS (12.0.1)</strong></p>
  <p>If anyone have any kind of solution then it would be appreciated !
  Otherwise have to go back to downgrade OS with old Xcode 12.</p>
  <p><strong>Update :</strong> adding some more info
  our project has more than 50+ Target Group in single project.
  As working in Product so managing all 50 client code in single project only using different Target group. But till now haven't face such issue in old xcode.</p>
  <p>When i delete all 49 client target group then its working fine with single Target group.   So if anyone have idea how to stop indexing for all the target at once that might also works..  Indexing should be working for selected Target only and at time only 1 will be selected.</p>