How can I enable two finger scrolling on Mac OS 10.12.6 Sierra for my ALPS touchpad in my Dell Vostro 2520? 
  
Secondary Issue: I have QE/CI enabled but everything feels kinda slow, and things have been freezing up really often. 
This isn't sudden, but if it helps to know, I migrated from a previous hard drive partition to keep my data.  
Device IDs: 
0x01168086 
0x00010000 
SMBIOS: 
MacBookPro8,1