We have a multi-site MX WAN and most of our users are on CItrix or Horizon VDIs without issues or any latency problems. There is a built in link quality check if you have two links from a site that looks like the below, have you checked that?
![cmr_0-1582058453804.png cmr_0-1582058453804.png](https://community.meraki.com/t5/image/serverpage/image-id/11707i2C5B15B6BE0F2C02/image-size/medium?v=v2&px=400)
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