Note: Not all users have all these files:

Com.apple.ATS.plist ~/Library/Prefs
Com.apple.ATS /Library/Caches
FontTablesAnnex /System/Library/Caches
All other files whose names include .ATS or font found in /System/Library/Caches, especially com.apple.ATS.System.fcache and com.apple.ATSServer.FODB_System

Move all these files to the trash (DON'T empty it
or the system will re-create some of the corrupted cache files) and restart. Then you can empty the trash.

ATSServer no longer crashes as much.
oah750d still crashes like a drunk asian.

As usual, all caveats apply, make backups, image your drive, wear a condom.

If this works, give feedback.