this is a general problem with lots of development. Network, Memory, GPU Speed. Designer / Engineer is on a modern Mac with 16-64 gig of ram and fast internet. They never try how their code/design works on some low end Intel UHD 630 or whatever. Lots of developers making 8-13 layer blob backgrounds that runs at 60 for 120fps on their modern mac but at 5-10fps on the average person's PC because of 15x overdraw.