[Several Fortuna Bugs]

The problem i've been having with the Fortuna update is when i exit Fortuna onto Opt Valis, where in full screen i'm experiencing lag/frame skips a lot less than in browser but i'm still getting the lag/frame skips.

I'm mostly running on low settings so I'm wondering if i can do anything in the setting to help me eliminate the lag/frame skip (i usually play solo).