@emmaozoms, updating the mx firmware is a good practice, with new releases there are performance improvements.
What ISP throughput is at this location?
With a test client check multiple throughput test ex. speedest.net, fast.com, etc.
With the same test client go to the page mx.meraki.com, there is a speed test button, that will get you the throughput between the client and the MX before going to the ISP.
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