Using a Q11 on iMac running Mojave 10.14.6 and Huion Driver V18.104.22.168025.
The pen works fine for 45 minutes to an hour then an annoying lag develops in the pen. The tablet is about 2 months old. I am using it to teach Geometry and Physics online and it is causing major problems.
Hi Joel Palmer, since you are using Mac Mojave, please try using Driver version 14.3.11 or 14.3.10. Please make sure you don't just drag the driver to your trash. Instead, open the driver and click on the gear found on the upper right-hand corner of the driver panel then click on the uninstall button. You can check out these articles: How to Uninstall the HUION MAC Driver V13 or V14 Properly and How to Install Huion Driver on MacOS.
HUION Customer Support