I've been running the [current version at the time...] of O-CPN for years on MacBook Pro [through several OS upgrades, currently Catalina
, or 10.15.2] with never an issue. I integrate RADAR
[via ethernet] and NMEA 2000
data [including GNSS- via ethernet or WiFi] as well.
Have you tried booting your MB Air in 'Safe Mode' to see if the issues persist? [i.e., rule
out external apps and add-ons...]
I suspect OCPN isn't the issue, and hope you find resolution.
In case this is helpful.