Thats why its good to develop on a slow machine.
+1 to this. I always try to get my hands on a slower mac, a slower PC, an old iPhone, an old Android device, and an old Chromebook for development and testing. My target audience is never gaming PCs with dedicated GPUs, so it doesn't make sense for me to develop on one. This approach has saved my bacon a bunch of times because I have caught platform-specific performance issues before releasing to the public.