Laptop wont connect to internet after sleep but will connect to network
Can I ask why are your DNS settings the way they are? This could definitely be a DNS issue and I don't recognize those addresses as common, just wondering.

In the Network pane of System Preferences I would want you to try and replicate this issue with a new configuration. Click the '+' symbol and select wireless adapter, try to replicate the issue now.

If the issue persists, please make a new user in System Preferences > Users &amp; Groups with administrator access &amp; no iCloud password. Log fully out of your user before logging into this new test account and try to replicate the issue again. Don't mess around with Network preferences -
 just let me know what you find. Also is there a reason you haven't updated beyond 10.10.5?