@november
I had absolutely no issues in installing and running it with xivlauncher, but I used the AUR package (which isn't available on Mint unfortunately). Needed some Tweaks to get ACT running, but thanks to IINACT and Lmeter this works perfectly now forunately.
I think it needs some tinkering to get it to work, I mean, it runs already, just with bad performance. Have you checked the settings, if everything's set up ok?