I’m just started out on learning unreal; I’m using a maxed out on specs 2013 MacPro, and I’m getting a lot of weirdness with the mouse when doing some things in the viewport; it’s like the mouse sensitivity goes down but there also seems to be some input latency. The landscape painting tools exhibit this consistently, but it does happen with other functions, and changing the view mode to be less resource intensive doesn’t appear to have an effect. The mouse is a logitech m100. It makes it pretty aggravating to do any kind of precision design, maybe not quite to the point of unusable, but close.
Is the lag only when doing 3D operations in the viewport? That sounds like it’s an issue with the graphics card. If you have dual graphics cards then it can only use one, and the GPU’s that the Mac Pro has aren’t for gaming so the performance wouldn’t be as good as a gaming card in general, considering that it’s pretty old at this point maybe the issue is just not having enough power. Have you adjusted the scalability settings?
It’s a professional workstation GPU, Firepro 6g d700. I know it’s kinda common to quip about macs and gaming, because most users have MacBooks or iMacs, but I run loads of modern, commercially produced games on both my 2013 MacPro and my 2008 Macpro, games that use the unreal engine at max quality without any problems.
There’s no lag navigating around the viewport with wasd and mouse, and nothing noticeable when translating or rotating meshes around.
Setting the scalability all the way down doesn’t appear to do anything positive, for the landscape tools anyhow. I tried setting the preview rendering level to SM4, which didn’t seem to do anything either.