launching app via webstart extremely slow (should be fixed by JDK-8079223)

FULL PRODUCT VERSION :
java version "1.8.0_60"
Java(TM) SE Runtime Environment (build 1.8.0_60-b27)
Java HotSpot(TM) Client VM (build 25.60-b23, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Windows Professional SP1 64bit

A DESCRIPTION OF THE PROBLEM :
The problem descriped in JDK-8075574 of an slow Webstart persists in 1.8.0_60.
It was meant to be fixed by JDK-8079223.

In the first stage of Webstart, the application is downloaded and verified as usual. The second stage lasts very long.

In 1.8.0_31 the application starts instantly after the download/verification process.


REGRESSION. Last worked in version 8u40

ADDITIONAL REGRESSION INFORMATION:
java version "1.8.0_31"
Java(TM) SE Runtime Environment (build 1.8.0_31-b13)
Java HotSpot(TM) Client VM (build 25.31-b07, mixed mode, sharing)

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Start an signed application via webstart.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The application starts instantly after the download/verification process.
ACTUAL -
After the download/verification process webstart takes a lot of time to start the application.

REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
not known