Question about the issue of slow performance and brush lag on Paintstorm for Mac

[Pearlpencil]

Hello there,

I have been really enjoying to use Paintstorm in both iOS and Ipad version and it was working perfectly when I started installing. I plan to use Paintstorm mainly instead of Photoshop and I would like to appreciate the team that has worked very hard to create and improve the ability and new feathers of the program. However after the update of iOS Sierra when I start painting or drawing, the brushes become very laggy and incredibly unable to use.

I have attached information of my computer as following ;

2 GHz Intel Core i5
8 GB 1867 MHz LPDDR3
Intel Iris Graphics 540 1536 MB

Thank you for your consideration and assistance for the issue.

[support]

try version 2.03, is it same?