I hope you don’t have pre-ignition problems with it. Most cars are designed for 87/88 octane.
Alcohol raises octane. Race cars have run on alcohol only
Any car designed to run on low octane will run fine on the higher stuff. It’s only if you try to run low-octane fuel in a car that needs high-octane that’s a problem. Octane slows down ignition, making pre-detonation less likely, not more likely.
If anything, it won't suffer pre-ignition, what will happen is mileage could suffer due to lack of full ignition. Higher octane is used to prevent pre-ignition, usually due to higher compression ratios. Lower compression ratios don't allow the higher octane fuel to fully combust, and you lose MPG/power.