The edges on the periphery are due to the OTT settings, 0.85 and 0.85 or whatever number you set them to, changing to 1 will remove edges but increase load on pc due to pushing more pixels through goggles, try 0.90 to see if it’s a happy balance.
Stutters try dialling back the resolution either in msfs or supersampling in OTT I use 1.6 in OTT and 80 in msfs but might have to drop to 70 in busy areas.