Stuttering after Switch install

[JGBR]

I recently had a weird network config of multiple routers and wifi.

I have now connected a netgear Prosafe108 router to my Apple Airport extreme and I've detected almost micro stutters in online gaming and loading of webpages.My Broadband holds up at 50.1mb but Im wondering their is some mistake that I could make.

Modem to router (1cable), Router to Switch (1cable), 4 machines plugged into invididial ports and a Wifi Access point on a port.(switch)

 

[m4rkw7]

Your set up look ok, the only thing that worries me in the "airport extreme".

Does it still lag with only one machine connected?

 

[Skidilliplop]

At which point is the PC that's stuttering connected? When using a wifi router as a dumb access point you should disable NAT. Some games don't like going through NAT twice.
What's your LAN to LAN network performance like? Streaming, file copying etc.