2.1.3 commit and 2.1.3 released binaries are different, yeah. The build script rewrote the latest release when someone pushed to master. It's only fixed in 2.2 (And future releases).
The latter commit you mentioned does fail to build, you can see the CI failing badge in GitHub that indicates it.
Can you try sending a troubleshooting archive with an older version that fails to work completely on your machine?
Specify the used commit and attach the binaries
If we can solve that, you might be able to find the exact commit that causes the lag.