PokerStars freezes up in Virtualbox 5.2+ but not in 5.1.30

[sleepnought]

Arch Linux 64-bit host, Windows 7 64-bit guest

To encounter the issue:

Use the following:

• virtualbox-5.2.2-2
• virtualbox-ext-oracle-5.2.2-1
• virtualbox-guest-iso-5.2.2-1
• virtualbox-host-dkms-5.2.2-2

Start the Windows 7 guest in Safe Mode, install the Guest Additions, select Direct3d support, agree to install only Basic Direct3d support, reboot the guest, then start PokerStars (the most recent build is 20294) and click the "Challenges" button in the menu. This resulted in the window freezing for several minutes (I had to force-kill it).

The program similarly hangs when sitting down at a table, which is the more serious part; the Challenges window just provides a more convenient way to test the issue.

Using all 5.2.0 VirtualBox components instead of 5.2.2 made no difference (PokerStars froze just the same).

It does not seem specific to the PokerStars build, as trying it with an earlier build of PokerStars made no difference.

For comparison, using VirtualBox 5.1.30 instead of 5.2+ and following the same steps as described above did NOT produce the issue (PokerStars works fine without hanging using the following):

• virtualbox 5.1.30-1
• virtualbox-ext-oracle 5.1.30-1
• virtualbox-guest-iso 5.1.30-1
• virtualbox-host-dkms 5.1.30-1

[sleepnought]

5.2.2 log of the freezing problem

[sleepnought]

5.1.30 log of it working fine

[sleepnought]

Seems to be fixed in Virtualbox 5.2.4