F-Zero GX Performance issue

[themaster123]

I just tried to reproduce that. I use 5.0-15936 the most recent dev as of this post. I had place a portable.txt to be a default. My desktop specs in profile is what I use. I did experience some pausing effect if i didn't use ubershader, which hybrid ubershader and compile before start I didn't notice it. So you probably need to enable those settings. For nvidia cards Direct x tend to be better with ubershader from my experience and what I heard around the forums.