RAM query

[mk108]

Hi. Made the switch to P3D V4 and find it way better than V3 and everything before. Interestingly however, despite having just 8GB RAM I'm doing ok, the only noticeable 'fault' is that some objects remain black for a short period before loading up textures. My motherboard is an Asus Z87-A and I'm restricted to DDR3 and 1.5 volts, currently I have a pair of 1600Mhz 4GB sticks. The motherboard's voltage restriction seems to rule out going up to 32GB but what benefits if any would something like a pair of 8GB, 1866Mhz sticks bring to the sim? Processor is an i7 4770K Haswell Processor overclocked to 4.3GHz, GPU is a GTX1060, 6GB. Regards, Mark