For me, trying to double click on the long line takes a while for ST to process it, and scrolling it into view is a little laggy, but otherwise ST seems to perform fine. Perhaps you have some plugin which is processing all visible lines in all visible views or something? Can you confirm this behavior with a clean state?

Yes, but the lag is only when interacting with the console view. If I interact with files opened, it performs fine.

When interacting with Console, Sublime Text application hit 100% of its core usage.

• Notice my computer is underclocked to ~1GHz. The test computer characteristics are:

  1. Processor Intel i3-390M @2.67 GHz: (Underclocked to 1 GHz)

     C:\>echo %PROCESSOR_ARCHITECTURE% %PROCESSOR_IDENTIFIER% %PROCESSOR_LEVEL% %PROCESSOR_REVISION%
     AMD64 Intel64 Family 6 Model 37 Stepping 5, GenuineIntel 6 2505
     

     

  2. RAM 8 GB DDR3 @1067 MHz:

     C:\>wmic MemoryChip get BankLabel, Capacity, MemoryType, TypeDetail, Speed
     BankLabel  Capacity    MemoryType  Speed  TypeDetail
     BANK 0     4294967296  24          1067   128
     BANK 2     4294967296  24          1067   128
     

     

  3. GPU Intel(R) HD Graphics 64 MB of RAM

     C:\>wmic path win32_VideoController get name
     Name
     Intel(R) HD Graphics
     

     

  
  

This doesn't reproduce in ST 4160. Closing as this has likely been fixed.