Howdy! Well, no changes in the version you have, other than moving from release to hotfix 1. We don't change already released code (without it getting a new hotfix number that is). BTW, why Corona 3 and not Corona 4?
So, unless you updated to Hotfix 1 recently and things changed, the changes must be due to non-Corona things, such as changes to C4D, the OS, the router, etc. Or it could be that recent projects are sending less data back and forth over the network and so are working fine, while previous projects with problems were larger and more complex?