Thanks mate; i7-4770, 16GB RAM, Nvidia GTX 660, Win 7. FPS does take a hit but I haven't been running a counter it would be upwards of 30FPS though as it isn't noticeably shuddery.
In an effort to keep my posts 'OT', here's a pic from yesterday when myself and two mates jumped into the AEF161 free flight server. Had a bunch of fun so cheers to those guys for hosting an AU based dedicated server. If any of you guys see this, we will endeavour to jump on your TS server next time and say g'day.