Gaps on top layers when bridging

Hi, I have been running my new v-core 4 hybrid for a few prints now and tried a print with many flat top surfaces today. There are parts where it needs to bridge. On those layers there are clear gaps where the filament simply did not stick leading to a very ugly layer. Filament is ABS The print is sliced in orca with the generic rarrig ABS profile. I adjusted the temperature to 248, cooling down to min 10, max 30%. Bridging fan speed is set to 30%. Print Speed is set to 80mm/s for the first layer and 105 for infill on the first. All other speed settings are stock (small piece so it does not print that fast) What settings do I need to look at?