Drive car with 95 octan petrol after performance increase

Hello together, What’s your experience with 95 petrol in cars with chip tuning to continue driving? Of course not always, but only in case of emergency, if there is nothing better (98 octan or better) in the range. Is it OK for cca. 3300RPM or cca. 130km/h highway speed? I drive an S4 B8 3.0L TFSI supercharged and I’m looking for chip tuning offers. It’s also my long-stretch car, and a 98 petrol is not always available everywhere.