According to reviews on the Topaz Community , v3.4.2 is a stable "sweet spot" for users who want the latest features without the potential experimental bugs found in the newer v4.x releases. System Requirements for x64 Windows
: Added camera profiles for newer models from Panasonic and Olympus. Topaz Community Version 3.4.2 Fixes This specific patch was primarily released to address v3.4.1 bugs , including: Grid Artifacts Topaz Photo AI v3.4.2 -x64- Pre-Activated -FTUA...
Indicates it is designed for 64-bit Windows operating systems. According to reviews on the Topaz Community , v3