Font appearance in Chrome

Hello Craig,
We regret for the inconvenience caused. Please follow the instructions below to restore the changes made by the AVG PC TuneUp program :
1. Open AVG PC TuneUp program.
2. Click on the Rescue Center on the right bottom corner.
3. Click on Undo Changes.
4. Select and restore the changes made by the AVG PC TuneUp program.
Thank you.

Chose to increase performance by changing font appearance. Now, I can't change it back.

Hello Craig,
We regret for the inconvenience caused. Please follow the instructions below to restore the changes made by the AVG PC TuneUp program :
1. Open AVG PC TuneUp program.
2. Click on the Rescue Center on the right bottom corner.
3. Click on Undo Changes.
4. Select and restore the changes made by the AVG PC TuneUp program.
Thank you.