Mikrotik continues to ignore fast x86, and still releases routers on old slow cores from the past:
CCR2116 (Annapurna Labs Alpine AL73400, based on ARM Cortex-A72 from 2016)
CCR2004 (Annapurna Labs Alpine AL324, based on ARM Cortex-A57 from 2012)
CCR10XX (Tilera TILE-Gx from 2012)
RB5009 (Marvell Armada 7040, based on ARM Cortex-A72 from 2016)
RB4011, RB1100AHx4 (Annapurna Labs Alpine AL21400, based on ARM Cortex-A15 from 2011)
RB3011 (Qualcomm IPQ8064, based on Qualcomm Krait 300 from 2012)
for example RB1100AHx4 can only 530 Mbps with GRE+IPsec tunnel http://forum.mikrotik.com/t/rb1100ahx4-ipsec-site-to-site-performance/153552/1