If you find the text is the wrong size, there are two environmental variables you can try:
ANKI_NOHIGHDPI=1 will turn off some of Qt’s high dpi support
ANKI_WEBSCALE=1 will alter the scale of Anki’s web views (like the deck list, study screen, etc), while leaving interface elements like the menu bar alone. Replace 1 with the desired scale, such as 1.5 or 0.75.
On Windows you can add these to a batch file to make it easier to start Anki. For example, create a file called startanki.bat on your desktop with the following text:
set ANKI_WEBSCALE=0.75 start "Anki" "C:\Program Files\Anki\anki"
After saving, you can double click on the file to start Anki with that setting.