For security researchers who absolutely need to run safely, the best practice is isolation.
Before you download torbrowser-install-12.0.4_en-US.exe , you must understand the dangers. The Tor Project explicitly warns against using outdated versions. Tor Browser 12.0.4 Older Versions for Windows
Fonts or text look broken. Solution: Disable hardware acceleration in about:preferences . This was a known rendering bug in Firefox 102 on specific GPU drivers. For security researchers who absolutely need to run