Hi @Patrickvm,
So we can better assist you, please provide a brief description of your current setup using this link as a guide.
Make sure to describe your network configuration/topology, including any networking hardware currently in use, so we can have a clear understanding of how your devices are communicating.
Can you elaborate a bit on what type of slowness you’re seeing? Where are things running slow? How long is it taking? How does it compare to before the update? Have you tried rebooting since the update?