hardware i7 - 4770 3.4 Ghz 16GB Ram Windows 10 Camera's 4 x Hikvision DS-2CD2342WD-I 4MP 5 X Hikvision DS-2CD2142FWD-I 4MP 1 X Hikvision DS-2DE5220IW-AE 2MP Software Blue Iris 18.104.22.168 x64 CPU Usage is sitting at 98% - 100% with unusable recordings and RAM sitting at 8GB plus. any idea's on what i need to do? is the hardware up to scratch PC wise or should i be looking at the set-up. i have tried the basic things like straight to disc recording and lowering frame rate to 15fps but any other tips would be great. graphics card suggestions?