Since the fix consists of an executable DLL-File, I could have put any harmful shenanigans in there. It is a costly skill, given that it is at the top of a tree, but gives you critical strike chance when you are not taking damage.
This update brings lots of fixes, weapon changes, tweaks to reload times, total ammo pools, and more besides that, the patch brings lots of fixes to gun models and heists.
If you haven’t done the basic troubleshooting, then try those before you head to the fixes below. The fun doesn't stop just at the base game if you're on PC, though. This update is all about fixing issues, some of them sorted out random crashes when using some weapons, and others collision issues and weapons mods not working as they should.