You might consider trying New MX 19.1.7.1 other release: fixes issue with many clients to see if it improves your throughput. I noticed an improvement on several MX75, MX95s and MX105s after upgrading to MX19.1.7.1. BUG FIXES - LIMITED PLATFORM FIXES Fixed an MX 19.1.7 regression that could result in MX75, MX85, MX95, MX105, MX250, and MX450 appliances servicing many clients to experience intermittent periods of heightened packet drops and latency. This resolves known issue MX-36338.
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