Whenever I have some middel (147 mB) sized org files in two windows, the screen gets black, and nothing ca get emacs to response, except a few Crtl-g, but then the scennflickers some some and is impossible to work. my systems: iMac 27” (Mid-2011) with High Sierra (10.13.6) with 16 Byte memory. Emacs version 27.1 (the problem were the at 27.0.91) Using straight for package management, and the configuration is homebuilt. As I did not make emacs to send the error reportI attach the file below med venlig hilsen Niels Niels Søndergaard Mariehøj 236, 2990 Nivå Denmark +45 4052 2789 niels@algon.dk