Same problem here on a 13 in MBP 2017 with 2 thunderbolts. The thing is, on my m1 mac Goodnotes takes less than 4 percent of CPU at any given moment be it while I'm exporting or just reading my notes. It's super silent. I think it's because of that fact that it is much much more optimized to be used on ARM chips so maybe that's causing our intel computers to work super hard. Kind of an inconvenience as I find myself having to export my documents as PDF just so I can read them without the computer trying to take off.
Same problem here on a 13 in MBP 2017 with 2 thunderbolts. The thing is, on my m1 mac Goodnotes takes less than 4 percent of CPU at any given moment be it while I'm exporting or just reading my notes. It's super silent. I think it's because of that fact that it is much much more optimized to be used on ARM chips so maybe that's causing our intel computers to work super hard. Kind of an inconvenience as I find myself having to export my documents as PDF just so I can read them without the computer trying to take off.