UE4 very laggy, why?

[anonymous_user_0df12f74]

@;545966

My engine is laggy and shadows don’t work

SPECS:
OS: OSX El Capitan
MacBook Air (13-inch, Early 2015)
Processor: 1.6 GHz Intel Core i5
Memory: 4 GB 1600 MHz DDR3
Graphics: Intel HD Graphics 6000 1536 MB

Unfortunately that laptop is below the recommended specs for UE4. The Macbook Air’s don’t have a very powerful CPU or GPU, and 4gb of ram is easy to exceed with regular use.

's the recommended specs:

For developing with UE4, we recommend a desktop PC with Windows 7 64-bit or a Mac with Mac OS X 10.9.2 or later, 8 GB RAM and a quad-core Intel or AMD processor, and a DX11 compatible video card. UE4 will run on desktops and laptops below these recommendations, but performance may be limited.

While the processor clock speed is not listed in the recommended specs, generally you would want 2.4ghz or greater for decent performance. The GPU you have is built into the CPU, for best results you would need a dedicated graphics processor (ATI or Nvidia).

You can adjust quality settings by clicking the Settings button on the toolbar, then in the Scalability Settings lower the quality level down to improve performance.