Currently having an issue where it seems dynamic sites have a rather high TTFB (Time to first byte) causing "Waiting for..." issues when loading them. Static sites seem fine however dynamic sites seem to have anywhere between a 500ms to 2000ms delay before producing results. Server is fine in terms of load, CPU usage and I/O. EDIT: Just to add, this appears to happen across multiple servers and not just one specific server. Is it a side effect of using LSAPI PHP? Any ideas?