New MacBook Pro freezes for after waking up from sleep

Did the suggestion resolve your issue? I'm having similar problems on the same laptop model.

Yeah seems like my issue also is a result of my network connection, but that should have no relation to system performance. Thank you for your response though.

Hello devline and welcome to Apple Support Communities. It appears you are having some difficulty with performance when exiting sleep mode on a MacBook Pro.

If there is an external monitor connected, start by disconnecting that and testing.

If there is no external monitor connected or if there is not difference in behavior when it is disconnected, there are a couple of additional isolation steps to try.

1) Start by doing a safe boot of the Mac. This will clear some cache files, turn off some system extensions and log-in items and give you a good foundation. After doing the safe boot, reboot normally and test.

How to use safe mode on your Mac

2) If the issue persists after a safe boot, set up a new admin user account and boot into that for testing. Doing so helps you to isolate the issue to the system or the user data and ultimately resolve it. 

You can find the steps to add a user here:

Set up users, guests, and groups on Mac

Cheers.